Robert Llewellyn and Ashley Hames test their knowledge of extreme machines. Based on the popular card game of the 1970s and 80s, the series uses the Top Trumps format to examine all manner of contraptions. High-performance planes come under the microscope as Robert takes a look at the private jet of choice for celebrities and royalty, the Cessna Citation X. And Ashley takes a flight with the Blades, the world's only passenger airline that doubles as an aerobatic display team.