I was cruising the local CL and saw this beast. It looks like it has the flammable gas propellant that you see on the Rat Rod cars' tail pipes. Hmmmmm. there's an idea...
http://southjersey.craigslist.org/bik/1210019958.html
Spin
http://southjersey.craigslist.org/bik/1210019958.html
Spin