[Christ]

Hey, if a A/C pump will turn as a motor with compressed air being forced through it, what's to stop someone from just piping their exhaust to it? Granted, you'd need more than one to keep backpressure issues away, but the CFM of the exhaust flow should be more than sufficient to make up for the lack of pressure on the line, and it should make decent torque that way.

I know it's not a steam idea, but I still feel like it should be mentioned. I might even give it a shot to pipe one in line with a small engine, just for kicks.