Christian Vogel, manager of W.A.R. Bootbau und Boothandel AG steers an electric powered Candela Seven boat on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

An electric powered Candela Seven boat is pictured on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

An electric powered Candela Seven boat is pictured on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

Christian Vogel, manager of W.A.R. Bootbau und Boothandel AG steers an electric powered Candela Seven boat on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

Christian Vogel, manager of W.A.R. Bootbau und Boothandel AG steers an electric powered Candela Seven boat on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

Christian Vogel, manager of W.A.R. Bootbau und Boothandel AG steers an electric powered Candela Seven boat on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

Christian Vogel, manager of W.A.R. Bootbau und Boothandel AG steers an electric powered Candela Seven boat past the historic steam vessel Uri on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

Christian Vogel (L), manager of W.A.R. Bootbau und Boothandel AG steers an electric powered Candela Seven boat on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

Christian Vogel, manager of W.A.R. Bootbau und Boothandel AG steers an electric powered Candela Seven boat past the historic steam vessel Uri on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

Christian Vogel (L), manager of W.A.R. Bootbau und Boothandel AG steers an electric powered Candela Seven boat on Lake Lucerne near Luzern, Switzerland September 2, 2020. Picture taken September 2, 2020. REUTERS/Arnd Wiegmann

A security guard stands at the front entrance of the Lucerne Hotel in the Upper West Side in the Manhattan borough of New York City, New York, U.S., August 10, 2020. REUTERS/Carlo Allegri

Customers wait for orders as Britain's Queen Elizabeth is seen during her address to the nation and the Commonwealth on a television amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

A sign is seen as a band plays amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

People embrace as a band plays amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

People drink beers as a band plays amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

People embrace as a band plays amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

People listen to a band play amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

People listen to a band play amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

People drink beers as a band plays amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

People wearing face masks hold hands as a band plays amid an outbreak of the coronavirus disease (COVID-19), at Cafe 247 in Lucerne Valley, California, U.S., April 5, 2020. REUTERS/Shannon Stapleton

The medievial Kapellbruecke bridge and the Wasserturm tower are seen in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

Pedal boats are seen during sunny spring weather at the dock of a boat rental on the banks of Lake Lucerne in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

Folding tables are seen during sunny spring weather on the terrace of a restaurant in front of the medievial Kapellbruecke bridge and the Wasserturm tower in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

Daniel Koch, Head of Communicable Diseases Division at the Federal Office of Public Health, listens to Swiss Interior Minister Alain Berset as he addresses a news conference after their visit to a drive-in test center for tests on coronavirus disease (COVID-19) in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

Swiss Interior Minister Alain Berset addresses a news conference, next to Daniel Koch, Head of Communicable Diseases Division at the Federal Office of Public Health, after their visit to a drive-in test center for tests on coronavirus disease (COVID-19) in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

A health worker takes a test from a person in a car at a drive-in test center for tests on coronavirus disease (COVID-19) in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

Health workers are seen at a drive-in test center for tests on coronavirus disease (COVID-19) in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

Health workers are seen at a drive-in test center for tests on coronavirus disease (COVID-19), next to the sign that reads: "Look ahead, don't turn head!", in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

A civil defence worker wears a protection mask as he checks the papers of a car driver before she can enter a drive-in test center for tests on coronavirus disease (COVID-19) in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

A health worker takes a test from a person in a car at a drive-in test center for tests on coronavirus disease (COVID-19) in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

A sign marks the entry of a drive-in test center for tests on coronavirus disease (COVID-19) in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

A civil defence worker wears a protection mask as he checks the papers of a car driver before he can enter a drive-in test center for tests on coronavirus disease (COVID-19), next to the sign that reads: "Only on advance notification. Close windows.", in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

A health worker takes a test from a person in a car at a drive-in test center for tests on coronavirus disease (COVID-19), next to the sign that reads: "Look ahead, don't turn head!", in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

A health worker takes a test from a person in a car at a drive-in test center for tests on coronavirus disease (COVID-19), next to the sign that reads: "Look ahead, don't turn head!", in Luzern, Switzerland March 31, 2020. REUTERS/Arnd Wiegmann

Civil defence workers wearing protection masks check the papers of a driver of a car before he can enter a drive-in test center for coronavirus disease (COVID-19) in Luzern, Switzerland March 27, 2020. The sign reads: "Only on advance notification. Close windows." REUTERS/Arnd Wiegmann

A health worker takes a test from a person in a car at a drive-in test center for coronavirus disease (COVID-19) in Luzern, Switzerland March 27, 2020. REUTERS/Arnd Wiegmann

A watch of Swiss manufacturer Swatch is displayed in the window of a Swatch shop in Luzern, Switzerland February 5, 2020. REUTERS/Arnd Wiegmann

Switzerland's national flag flies in front of the logo of Swiss bank Credit Suisse in Luzern, Switzerland February 5, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss watch manufacturer Rolex is seen in Luzern, Switzerland February 5, 2020. REUTERS/Arnd Wiegmann

A general view shows Lake Lucerne and the city of Luzern, Switzerland February 5, 2020. REUTERS/Arnd Wiegmann

The medievial Kapellbruecke bridge, the Wasserturm tower and Mount Rigi are seen in Luzern, Switzerland February 5, 2020. REUTERS/Arnd Wiegmann

The medievial Kapellbruecke bridge, the Wasserturm tower and the old town are seen in Luzern, Switzerland February 5, 2020. REUTERS/Arnd Wiegmann

People look over Lake Lucerne from a terrace at the Buergenstock Hotels & Resort on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

The Palace Hotel is seen at Buergenstock Hotels & Resort on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

Buergenstock Hotels & Resort is seen on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

Buergenstock Hotels & Resort is seen on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

The logo of Buergenstock Hotels & Resort is seen on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss watch manufacturer Omega is seen at a shop at Buergenstock Hotels & Resort on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss watch manufacturer Omega is seen at a shop at Buergenstock Hotels & Resort on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss watch manufacturer Swatch is seen at a shop at Buergenstock Hotels & Resort on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss watch manufacturer Swatch is seen at a shop at Buergenstock Hotels & Resort on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss watch manufacturer Swatch is seen at a shop at Buergenstock Hotels & Resort on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss watch manufacturer Swatch is seen at a shop at Buergenstock Hotels & Resort on Buergenstock near Lucerne, Switzerland January 16, 2020. REUTERS/Arnd Wiegmann

A participant of a tour group of 4,000 Chinese takes pictures of the Chapel Bridge in the central Swiss city of Luzern, Switzerland May 13, 2019. REUTERS/Arnd Wiegmann

Participants of a tour group of 4,000 Chinese take pictures during their visit to the central Swiss city of Luzern, Switzerland May 13, 2019. REUTERS/Arnd Wiegmann

Participants of a tour group of 4,000 Chinese tourists walk over a bridge as Lake Lucerne and Mount Rigi are seen in the background during their visit to the central Swiss city of Luzern, Switzerland May 13, 2019. REUTERS/Arnd Wiegmann

Participants of a tour group of 4,000 Chinese tourists take pictures in front of the Chapel Bridge during their visit to the central Swiss city of Luzern, Switzerland May 13, 2019. REUTERS/Arnd Wiegmann

Participants of a tour group of 4,000 Chinese tourists take pictures in front of the Chapel Bridge during their visit to the central Swiss city of Luzern, Switzerland May 13, 2019. REUTERS/Arnd Wiegmann

Participants of a tour group of 4,000 Chinese tourists walk over a bridge during their visit to the central Swiss city of Luzern, Switzerland May 13, 2019. REUTERS/Arnd Wiegmann

The remaining archway of the historic railway station is seen in front of the modern central station in Luzern, Switzerland March 30, 2019. REUTERS/Arnd Wiegmann