Extreme Machines is dedicated to finding out how machines work. Trucks are unquestionably the giants of the road. We cover all the uses of trucks throughout this film from the serious business of transportation - almost everything we consume is at some stage transported by a truck - to the thrills and spills of truck racing, witnessing the world's fastest truck racing a jet aircraft and truck stunts. We take a look at the New York fire brigade in action. Their trucks are so long that they need an extra driver at the back! We also feature the world's most expensive truck which doubles up as a TV studio. The price? A cool $6 million!