In this supersized edition of Bangers & Classics, David celebrates an anniversary, James digs out his water wings, and a handily-placed time machine takes the lads back to the 1970s where, before being evicted from the decade, they take a close look at motoring in the 70s and 'persuade' the Rover SD1 to appear before the banger or classic Grand Jury. They then nip across to Cape Canaveral to explain why so many astronauts drove Corvettes and take their usual haphazard look at car manufacturers who didn't just make cars...