Neatorama reader Richard Joslin suggested this photo of a blender powered by a V8 engine (?), built by Jim Mason:
HOLY COW!!!! The gas-powered flame-throwing margarita mixer that puts the one you posted earlier look like NOTHIN!!!
I've seen it in action - it runs on an electric motor that actually moves the pistons up and down in normal fashion at very high speed - a tank of propane supplies the flames. There is also a stick shifter to control speeds in typical 4-speed auto configuration.
http://www.whatiamupto.com/v-8blender/ | Jim's other crazy stuff - Thanks Richard!