Today I tried the motor from the camera for the truck gearbox. It stalled too easily. I dug up another motor from who knows what, and that was strong enough. I pulled a twin AA-Battery holder from a remote and wired that to the motor with one of the wires running through a switch, so I can turn it on and off. All I need to do now is stably connect the motor so it can power the gearbox, and make everything fit inside the truck.