What an interesting thread , I hope it grows as there must be many more aero engined cars around .
You MUST meet BRUTUS! Brutus is powered by a BMW VI aero-engine (oh, I wish it was mine!) that once helped aircraft such as the Heinkel He 51, the He 70, the Dornier 17 and the early He 111 take to the skies.
The commentary is in german, but at least you can hear this monster!
http://www.youtube.com/watch?v=zUsaYRyuGNY
Peter