A man poses for a picture next to a caterpillar-tracked Bentley Continental GT, which was modified by Russian car engineering enthusiasts, during a demonstration in St. Petersburg, Russia June 7, 2019. Russian roads are famous for being hard to conquer but not when you are driving a tank. REUTERS/Anton Vaganov

A woman poses for a picture next to a caterpillar-tracked Bentley Continental GT, which was modified by Russian car engineering enthusiasts, during a demonstration in St. Petersburg, Russia June 7, 2019. Zarutskiy says there were many technical challenges with conversion of the car which took seven months. REUTERS/Anton Vaganov

A child crawls on a caterpillar as people gather around a caterpillar-tracked Bentley Continental GT, which was modified by Russian car engineering enthusiasts, during a demonstration in St. Petersburg, Russia June 7, 2019. He does not reveal how much money he has spent on the spare parts, but insists the initial Bentley was the cheapest one available in Russia. REUTERS/Anton Vaganov

People gather around a caterpillar-tracked Bentley Continental GT, which was modified by Russian car engineering enthusiasts, during a demonstration in St. Petersburg, Russia June 7, 2019. REUTERS/Anton Vaganov