A shuttle bus passes the Pretty Rocks site in Denali National Park, Alaska, U.S., July 21, 2020. Picture taken July 21, 2020. REUTERS/Yereth Rosen

Visitors take a shuttle ride on a hot day at the 117th Kentucky State Fair in Louisville, Kentucky, U.S. August 21, 2021. REUTERS/Amira Karaoud

John Deere tractors, converted into shuttles, wait to take visitors around the 117th Kentucky State Fair in Louisville, Kentucky, U.S. August 21, 2021. REUTERS/Amira Karaoud

Taiga Hatekeyama and his mother Yasuyo wearing protective masks, amid the coronavirus disease (COVID-19) outbreak, wave to a shuttle bus leaving from the athletes' village for Tokyo 2020 Olympic Games in Tokyo, Japan, August 9, 2021. REUTERS/Kim Kyung-Hoon

Taiga Hatekeyama and his mother Yasuyo wearing protective masks, amid the coronavirus disease (COVID-19) outbreak, wave to a shuttle bus leaving from the athletes' village for Tokyo 2020 Olympic Games in Tokyo, Japan, August 9, 2021. REUTERS/Kim Kyung-Hoon

Taiga Hatekeyama and his mother Yasuyo wearing protective masks, amid the coronavirus disease (COVID-19) outbreak, wave to a shuttle bus leaving from the athletes' village for Tokyo 2020 Olympic Games in Tokyo, Japan, August 9, 2021. REUTERS/Kim Kyung-Hoon

People wearing protective masks, amid the coronavirus disease (COVID-19) outbreak, wave to a shuttle bus leaving from the athletes' village for Tokyo 2020 Olympic Games in Tokyo, Japan, July 29, 2021. REUTERS/Kim Kyung-Hoon

People wearing protective masks, amid the coronavirus disease (COVID-19) outbreak, wave to a shuttle bus leaving from the athletes' village for Tokyo 2020 Olympic Games in Tokyo, Japan, July 29, 2021. REUTERS/Kim Kyung-Hoon

The Tokyo skyline is seen through the rear window of the Olympic shuttle bus ahead of the Tokyo 2020 Olympic Games, that have been postponed to 2021 due to the coronavirus disease (COVID-19), in Tokyo, Japan, July 21, 2021. Picture taken through a window from an official Olympic transport bus. REUTERS/Thomas Peter

The Tokyo skyline is seen from the Olympic shuttle bus ahead of the Tokyo 2020 Olympic Games, that have been postponed to 2021 due to the coronavirus disease (COVID-19), in Tokyo, Japan, July 21, 2021. Picture taken through a window from an official Olympic transport bus. REUTERS/Thomas Peter

Tokyo 2020 Olympic Games coverage is seen on a TV on an Olympic shuttle bus as the coronavirus disease (COVID-19) disease continues in Tokyo, Japan, July 21, 2021. REUTERS/Thomas Peter

Wally Funk reacts after receiving her astronaut's wings from Blue Origin's Jeff Ashby, a former space shuttle commander at a post-launch press conference after she flew with three crewmates on Blue Origin's inaugural flight to the edge of space, in the nearby town of Van Horn, Texas, U.S., July 20, 2021. REUTERS/Joe Skipper

Billionaire American businessman Jeff Bezos wears his astronaut's wings after receiving them from Blue Origin's Jeff Ashby, a former space shuttle commander at a post-launch press conference after his flight on Blue Origin's inaugural flight to the edge of space, in the nearby town of Van Horn, Texas, U.S., July 20, 2021. REUTERS/Joe Skipper

Wally Funk reacts after receiving her astronaut's wings from Blue Origin's Jeff Ashby, a former space shuttle commander at a post-launch press conference after she flew with three crewmates on Blue Origin's inaugural flight to the edge of space, in the nearby town of Van Horn, Texas, U.S., July 20, 2021. REUTERS/Joe Skipper

Wally Funk receives her astronaut's wings from Blue Origin's Jeff Ashby, a former space shuttle commander at a post-launch press conference after she flew with three crewmates on Blue Origin's inaugural flight to the edge of space, in the nearby town of Van Horn, Texas, U.S., July 20, 2021. REUTERS/Joe Skipper

Billionaire American businessman Jeff Bezos (L) receives his astronaut's wings from Blue Origin's Jeff Ashby, a former space shuttle commander, as he and his crew mates appear at a post-launch news conference after they flew on Blue Origin's inaugural flight to the edge of space, in the nearby town of Van Horn, Texas, U.S. July 20, 2021. REUTERS/Joe Skipper

Walkers board a shuttle bus to drive to the beginning of an 11km walk to the site of the Qu'Appelle Industrial School, a residential school for First Nations children that operated from 1884-1973, and was demolished in 1993, on Canada Day in Lebret, Saskatchewan, Canada, July 1, 2021.  Calls to scale back or cancel Canada Day celebrations snowballed after, beginning in May, almost 1,000 unmarked graves were found at former residential schools in British Columbia and Saskatchewan that were mainly run by the Catholic Church and funded by the government. REUTERS/Valerie Zink

Electric vehicles are pictured at an internal shuttle bus station of the Tokyo 2020 Olympic and Paralympic Village in Tokyo, Japan, June 20, 2021. REUTERS/Kim Kyung-Hoon

Electric vehicles are pictured at an internal shuttle bus station of the Tokyo 2020 Olympic and Paralympic Village in Tokyo, Japan, June 20, 2021. REUTERS/Kim Kyung-Hoon

People queue to take a shuttle bus while visiting the Mutianyu section of the Great Wall of China during Labour Day holiday, following the outbreak of the coronavirus disease (COVID-19), in Beijing, China May 2, 2021. REUTERS/Carlos Garcia Rawlins

Athletics - Athletics World Relays Championships - Silesian Stadium, Chorzow, Poland - May 1, 2021 Germany's Anne Weigold, Gregor Traber, Erik Balnuweit and Monika Zapalska pose for a photo after the Shuttle Hurdles Relay race REUTERS/Aleksandra Szmigiel

People sit in a shuttle bus arriving at Austria Center, which has been set up as a coronavirus disease (COVID-19) mass vaccination centre, in Vienna, Austria April 22, 2021. REUTERS/Lisi Niesner

A shuttle bus arrives at Austria Center, which has been set up as a coronavirus disease (COVID-19) mass vaccination centre, in Vienna, Austria April 22, 2021. REUTERS/Lisi Niesner

Subway riders wearing protective face masks exit the shuttle train during the coronavirus pandemic at the Times Square stop in New York City, U.S., March 11, 2021. REUTERS/Shannon Stapleton

Travellers from an international flight line up to board a shuttle which will take them to a quarantine hotel, as part of Canada's new measures against the coronavirus disease (COVID-19), at Toronto Pearson International Airport in Mississauga, Ontario, Canada February 24, 2021. REUTERS/Carlos Osorio

Chander Gawri shows the at-home COVID-19 test given to all international arrivals before he boards a shuttle which will take him to a quarantine hotel, as part of Canada's new measures against the coronavirus disease (COVID-19), at Toronto Pearson International Airport in Mississauga, Ontario, Canada February 24, 2021. REUTERS/Carlos Osorio

A worker uses her phone to take pictures of a high speed railway station that she has been working on, as she travels back to her dorm on a shuttle bus in Beijing, China. February 6, 2021. REUTERS/Tingshu Wang SEARCH "MIGRANTS WANG" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Yang Nianlian, 33, a migrant worker, waits with other security guards for the shuttle bus to take them to work early in the morning in Beijing, China, February 8, 2021. "A dream of mine is to work hard in the city and earn as much money as I can, for my family, for my child," Nianlian said, "But today I feel like I've let them down somehow." REUTERS/Tingshu Wang SEARCH "MIGRANTS WANG" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Workers travel home on a shuttle bus in Beijing, China, January 31, 2021. REUTERS/Tingshu Wang SEARCH "MIGRANTS WANG" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

A lorry driver looks out from an internal shuttle bus as he arrives at the Eurotunnel on route to France on the first day after the end of the Brexit transition period, Folkestone, Britain, January 1, 2021. REUTERS/Toby Melville

An Eurotunnel Shuttle freight from France to Britain is seen in Coquelles, near Calais, France, December 31, 2020. REUTERS/Pascal Rossignol

The Pit Stop at the Eurotunnel, where lorries are checked before boarding the Shuttle Freight from France to Britain, is seen in Coquelles near Calais, after France barred all people coming from the United Kingdom, for 48 hours from Sunday night, over fears of a new strain of the coronavirus, amid the spread of the coronavirus disease (COVID-19) in France, December 22, 2020. REUTERS/Pascal Rossignol

The Pit Stop at the Eurotunnel, where lorries are checked before boarding the Shuttle Freight from France to Britain, is seen in Coquelles near Calais, after France barred all people coming from the United Kingdom, for 48 hours from Sunday night, over fears of a new strain of the coronavirus, amid the spread of the coronavirus disease (COVID-19) in France, December 22, 2020. REUTERS/Pascal Rossignol

The Eurotunnel Shuttle Freight from Britain to France is seen in Coquelles near Calais, northern France, after France barred all people coming from the United Kingdom, for 48 hours from Sunday night, over fears of a new strain of the coronavirus, amid the spread of the coronavirus disease (COVID-19) in France, December 22, 2020. REUTERS/Pascal Rossignol

An empty Eurotunnel Shuttle Freight from Britain to France appears in Coquelles near Calais, northern France, after France barred all people coming from the United Kingdom, for 48 hours from Sunday night, over fears of a new strain of the coronavirus, amid the spread of the coronavirus disease (COVID-19) in France, December 22, 2020. REUTERS/Pascal Rossignol

An Eurotunnel freight shuttle enters the Channel Tunnel in Coquelles, near Calais, northern France, December 16, 2020. REUTERS/Pascal Rossignol

An Eurotunnel freight shuttle enters the Channel Tunnel in Coquelles, near Calais, northern France, December 16, 2020. Picture taken with a drone. REUTERS/Pascal Rossignol

An Eurotunnel freight shuttle enters the Channel Tunnel in Coquelles, near Calais, northern France, December 16, 2020. Picture taken with a drone. REUTERS/Pascal Rossignol

Trucks queue to embark aboard the freight shuttle at Eurotunnel terminal in Coquelles near Calais, France, December 16, 2020. Picture taken with a drone. REUTERS/Pascal Rossignol

Trucks queue to embark aboard the freight shuttle at Eurotunnel terminal in Coquelles near Calais, France, December 16, 2020. Picture taken with a drone. REUTERS/Pascal Rossignol

People stand in front of a scaled model of the Challenger space shuttle at a space science museum in Wenchang, Hainan province, China November 22, 2020. REUTERS/Tingshu Wang

Ajay Singh, Chairman and Managing Director of Indian budget airline SpiceJet, speaks with the media next to a seaplane operated by SpiceJet's Spice Shuttle, in Ahmedabad, India, October 31, 2020. REUTERS/Amit Dave

A seaplane, operated by Indian budget airline SpiceJet's Spice Shuttle, lands in the waters of Sabarmati river after it was inaugurated by India's Prime Minister Narendra Modi, in Ahmedabad, India, October 31, 2020. REUTERS/Amit Dave

A patient shuttle arrives at the main entrance of the Mayo Clinic after Kuwait announced that ruling Emir Sheikh Sabah al-Ahmad al-Sabah had died during treatment at the Clinic in Rochester, Minnesota, U.S. September 29, 2020. REUTERS/Eric Miller

Unaccompanied refugee minors leave an airport shuttle as they board a plane to the mainland following a fire at the Moria camp for refugees and migrants on the island of Lesbos, Greece, September 9, 2020. REUTERS/Elias Marcou

Unaccompanied refugee minors leave an airport shuttle as they board a plane to the mainland following a fire at the Moria camp for refugees and migrants on the island of Lesbos, Greece, September 9, 2020. REUTERS/Elias Marcou

Stranded workers wait for shuttle services following the suspension of mass transportation on the first day of the government's reimplementation of a stricter lockdown to curb coronavirus disease (COVID-19) infections, in Quezon City, Metro Manila, Philippines, August 4, 2020. REUTERS/Eloisa Lopez

Stranded workers wait for shuttle services following the suspension of mass transportation on the first day of the government's reimplementation of a stricter lockdown to curb coronavirus disease (COVID-19) infections, in Quezon City, Metro Manila, Philippines, August 4, 2020. REUTERS/Eloisa Lopez

Stranded workers wait for shuttle services following the suspension of mass transportation on the first day of the government's reimplementation of a stricter lockdown to curb coronavirus disease (COVID-19) infections, in Quezon City, Metro Manila, Philippines, August 4, 2020. REUTERS/Eloisa Lopez

Shopping mall workers wearing masks for protection against the coronavirus disease (COVID-19) wait for a shuttle outside a mall, in Makati City, Metro Manila, Philippines, July 24, 2020. REUTERS/Eloisa Lopez

People wearing face masks following the outbreak of the coronavirus disease (COVID-19) get off a shuttle bus from the subway station during morning rush hour at the Financial Street area in Beijing, China July 16, 2020. REUTERS/Tingshu Wang

Same Diop, a taxi driver who says is unable to shuttle passengers between Touba and Dakar and struggling to support his family due to the coronavirus disease (COVID-19) restrictions, holds out his identity card as he begs on the street in the holy city of Touba, Senegal June 3, 2020. REUTERS/Zohra Bensemra

Traveling nurse Meghan Lindsey sits on a shuttle vehicle with Nekiesha Clark en route to their shift at NYU Health Hospital in the Queens borough of New York, U.S., May 5, 2020. Picture taken May 5, 2020. REUTERS/Shannon Stapleton

Traveling nurse Meghan Lindsey gets off a shuttle vehicle after her shift at NYU Winthrop Hospital in Garden City, New York, U.S., May 6, 2020. Picture taken May 6, 2020. REUTERS/Shannon Stapleton

A Hertz Global Holdings Inc. shuttle bus is seen at Los Angeles International Airport (LAX) on an unusually empty Memorial Day weekend during the outbreak of the coronavirus disease (COVID-19) in Los Angeles, California, U.S., May 23, 2020. REUTERS/Patrick T. Fallon

A flight crew member disembarks from a hotel shuttle van while wearing a protective mask at Los Angeles International Airport (LAX) on an unusually empty Memorial Day weekend during the outbreak of the coronavirus disease (COVID-19) in Los Angeles, California, U.S., May 23, 2020. REUTERS/Patrick T. Fallon

A Hertz Global Holdings Inc. shuttle bus is seen at Los Angeles International Airport (LAX) on an unusually empty Memorial Day weekend during the outbreak of the coronavirus disease (COVID-19) in Los Angeles, California, U.S., May 23, 2020. REUTERS/Patrick T. Fallon

Employees of Baidu wearing face masks get on a shuttle bus from the company's headquarters to another office compound in Beijing, following the novel coronavirus disease (COVID-19) outbreak, China May 18, 2020. REUTERS/Tingshu Wang

Workers wait in line for a shuttle at Tesla's primary vehicle factory after CEO Elon Musk announced he was defying local officials' coronavirus disease (COVID-19) restrictions by reopening the plant in Fremont, California, U.S. May 12, 2020. REUTERS/Stephen Lam

A general view of an NHS shuttle bus road marking outside the NHS Nightingale Hospital at the Excel Centre, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 5, 2020. REUTERS/John Sibley