I feel an idea coming on... has anyone strapped a 3.7HP airplane motor to an NXT yet? No? Time to go shopping...
Do not, under any circumstances, try this at home. At least, unless you know what you're doing or have years of experience that keeps you safe.
Anyways, it's pretty cool. However, I doubt our poor little NXT servos put put that much RPM. Oh well. Perhaps it's hacking time >:-)