Richard Hammond's Underwater Car Challenge pt 1 - Top Gear - BBC autos. Part 1 of 2. Top Gear's daredevil hamster Richard Hammond tests out how long it takes to escape from a car in the drink! High quality vehicle challenge video from the early series of the award winning motoring show. Watch part 2 of this challenge in high quality on http://www.YouTube.com/TopGear and visit http://www.TopGear.com for all the latest news and car reviews.