Found this one here in France, and never knew that AMT made these kinds of remote-control toys! Pretty good shape except for the windshield - and there were even two D batteries still in the battery box, but all corroded of course. I would assume that this is one of their promo models - the bumpers are metal, not plastic, and the logo on the bottom is AMT Corp., from Birmingham, Michigan.
The seller didn't know much about it either, so I did a quick google search and it doesn't seem all that rare, with even some MIB examples on sale recently. It features "pneumatic" steering, and I assume that's what the big button on the remote control does: the front steering is spring loaded, and there's a sort of rubber bladder in between two parts: when you send air into it, it expands and pushes the steering straight. Otherwise it keeps turning left, appropriately enough.
The motor was frozen, but gave the bearings a shot of WD40, put 5 volts through it and it started right up! Pretty healthy sounding too. It's a five pole I think, altho the brushes just look like two strips of copper, and oddly enough, it seems to have very primitive (large!) ball bearings on each end.
Anybody ever seen one of these?
Don