Simon Phipps IM’ed me:

I saw a great car for you yesterday. I’ll find the YouTube video.

http://www.youtube.com/watch?v=CwKPm1tXQR0 & here it is in action: http://www.youtube.com/watch?v=5860ulYwvC4

…which displays what happens when you put a 150bhp-odd engine into a SmartCar.

The results are… entertaining.