[sparkycuda]

Don't have direct experience with using cordless drill in a model, but saw a kids firetruck in a local parade last summer. An adult dressed as a clown was driving and later I saw him and found he used a Dewalt drill to power the firetruck - with him riding. Used one battery during a one mile parade on level ground. Had a second battery running lights and siren. I don't see any reason why you could not use a drill - just have to be able to control it with your radio. The battery is probably not the most space efficient shape. I remember someone on one of the forums using drill batteries and stripping the case away to make it a smaller package.

Ken