They were asked to race in a variety of motor-esque machines, from the aforementioned armchairs to Formula 1 cars.
The final round of each show, between the two top-ranking guests, features the use of the car cannon in attempts to hit various things.
The show originated as a one-off special of the popular BBC Two show, Top Gear, and was produced, as were a number of other television specials, in aid of charity Comic Relief for Sport Relief in 2004.
Competitors: This episode recreated stunts from movies, and featured racing in modified armchairs and towing a bath full of water with a Ferrari.
Competitors: The following notable people are included amongst those who took part in other episodes: Edwina Currie, Ben Fogle, Charlie Dimmock, Steve Furst, Arabella Weir, Shane Lynch, Jilly Goolden, Ainsley Harriott, Jake Maskall, Nell McAndrew, Leanne Wilson, Reggie Yates, Trevor Nelson, Jennie Bond, Beverley Turner, Shane Lynch, Will Mellor and Rowland Rivron