Snow ploughs remove snow in the finish area ahead of the Alpine Skiing World Championships in Cortina d'Ampezzo, Italy, February 7, 2021. REUTERS/Leonhard Foeger

A snow plough drives during snowfall on a motorway in Dortmund, Germany, February 7, 2021. REUTERS/Leon Kuegeler

A snow plough clears the street in front of the Puerta de Alcala monument, after heavy snowfal in Madrid, Spain January 13, 2021. REUTERS/Marco Trujillo

A snow plough moves on the Glacier 3000 ski resort during the coronavirus disease (COVID-19) outbreak in Les Diablerets, Switzerland, December 10, 2020. REUTERS/Denis Balibouse

A farmer drives a tractor as he ploughs a field near the village of Villigen, Switzerland August 18, 2010. REUTERS/Arnd Wiegmann

A farmer uses cows to plough a field on Tuti Island, Khartoum, Sudan, February 11, 2020. REUTERS/Zohra Bensemra SEARCH "BENSEMRA NILE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A tribute to the NHS is seen ploughed into a farmers field in East Meon, following the outbreak of the coronavirus disease (COVID-19), East Meon, Britain, May 5, 2020. REUTERS/Matthew Childs

A tribute to the NHS is seen ploughed into a farmers field in East Meon, following the outbreak of the coronavirus disease (COVID-19), East Meon, Britain, May 5, 2020. REUTERS/Matthew Childs

A tribute to the NHS is seen ploughed into a farmers field in Berkhamsted, following the outbreak of the coronavirus disease (COVID-19), Berkhamsted, Britain, May 5, 2020. REUTERS/Matthew Childs

A tribute to the NHS is seen ploughed into a farmers field in Berkhamsted, following the outbreak of the coronavirus disease (COVID-19), Berkhamsted, Britain, May 5, 2020. REUTERS/Matthew Childs

Seagulls fly around as a farmer ploughs a field in Liepupe, Latvia April 3, 2020. REUTERS/Ints Kalnins

Seagulls fly around as a farmer ploughs a field in Liepupe, Latvia April 3, 2020. REUTERS/Ints Kalnins

Seagulls fly around as a farmer ploughs a field in Liepupe, Latvia April 3, 2020. REUTERS/Ints Kalnins

A tractor surrounded by seagull's is seen ploughing a field near Aberfeldy as the spread of the coronavirus disease (COVID-19) continues, Scotland, Britain, March 28, 2020. REUTERS/Russell Cheyne

A tractor surrounded by seagull's is seen ploughing a field near Aberfeldy as the spread of the coronavirus disease (COVID-19) continues, Scotland, Britain, March 28, 2020. REUTERS/Russell Cheyne

A general view of the plough roundabout in Hemel Hempstead as the spread of coronavirus disease (COVID-19) continues, Britain March 24, 2020. REUTERS/Matthew Childs

Emergency vehicles at the scene after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 24, 2020. Elmar Schulten/Waldeckische Landeszeitung via REUTERS.

Emergency staff attends injured after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 24, 2020. Elmar Schulten/Waldeckische Landeszeitung via REUTERS.

Emergency staff at the scene after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 24, 2020. Elmar Schulten/Waldeckische Landeszeitung via REUTERS.

Emergency staff attends injured after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 24, 2020. Elmar Schulten/Waldeckische Landeszeitung via REUTERS.

Snow ploughs are parked near a snow resort in Iiyama, Nagano Prefecture, Japan January 24, 2020. Picture taken January 24, 2020. REUTERS/Aaron Sheldrick

People light the candles as they attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

A man passes the wall with candles lit as people attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Candles are lit as people attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Candles are lit as people attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

People light candles as they attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

A person holds a candle as people attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

People attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

People attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

People attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

People attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

People attend a commemoration outside a church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Hesse's state Premier Volker Bouffier speaks to reporters, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Hesse's state Premier Volker Bouffier speaks to reporters, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Hesse's state Premier Volker Bouffier speaks to reporters, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Hesse's state Premier Volker Bouffier speaks to reporters, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Police officers patrol as people enter the church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

People enter the church the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Police officers stand guard as people enter the church, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Firefighters remove part of a fence at the crash site, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Firefighters secure the crash site, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Police officers stand near the crash site, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Nordhessen Police Spokesman Henning Hinn speaks at a news conference, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Nordhessen Police Spokesman Henning Hinn speaks at a news conference, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Nordhessen Police Spokesman Henning Hinn speaks at a news conference, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

A view of a street with balloons, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

A view of a street with balloons, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Carnival decorations are pictured, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Balloons hang off a building, the day after a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

A small float sits in a parking lot several hundred metres from where a car ploughed into a Carnival parade, injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

A firefighter secures the area the day after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

The area is secured by the firefighters and police the day after a car ploughed into a Carnival parade injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

A sign of the Volkmarsen Carnival Club reading "Foolish territory" is pictured at the entrance of the town, the day after a car ploughed into a Carnival parade injuring several people in Volkmarsen, Germany February 25, 2020. REUTERS/Thilo Schmuelgen

Hesse's State Minister of Interior Peter Beuth talks to the media, after a car ploughed into a Carnaval parade injuring several people in Volkmarsen, Germany February 24, 2020. REUTERS/Thio Schmuelgen

Hesse's State Minister of Interior Peter Beuth talks to the media, after a car ploughed into a Carnaval parade injuring several people in Volkmarsen, Germany February 24, 2020. REUTERS/Thio Schmuelgen

Hesse's State Minister of Interior Peter Beuth talks to the media, after a car ploughed into a Carnaval parade injuring several people in Volkmarsen, Germany February 24, 2020. REUTERS/Thio Schmuelgen

Police?forensic officers?work at the scene after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 24, 2020. REUTERS/Thilo Schmuelgen

Police forensic officers work at the scene after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 24, 2020. REUTERS/Thilo Schmuelgen

Police?forensic officers?work at the scene after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 24, 2020. REUTERS/Thilo Schmuelgen

Police forensic officers work at the scene after a car ploughed into a carnival parade injuring several people in Volkmarsen, Germany February 24, 2020. REUTERS/Thilo Schmuelgen