Part 1 of 2. Jeremy, Richard and James are challenged to drive from Colditz to the German border using just 13.5 litres of petrol, each using very different cars - a Ford, a Merc, and a BMW. Can they pull it off? Great outtake from Series 15 of Top Gear. Subscribe to see all the reviews, races and challenges: http://bit.ly/zx9OQI Top Gear YouTube channel: http://www.youtube.com/topgear TopGear.com website: http://www.topgear.com Top Gear Facebook: http://www.facebook.com/topgear Top Gear Twitter: http://twitter.com/BBC_topgear