Scrapheap Challenge: Rocket Railway

The Brum Brums from Birmingham and the Aquarium Crew from Weymouth do battle to see who can build the best super-fast trains, using methods inspired by US Air Force rocket sleds. However, the teams are not allowed to send drive to the wheels, so normal forms of propulsion, such as chain and sprockets and propshafts, are prohibited. Presented by Robert Llewellyn and Lisa Rogers