I figured there might of been solenoids for moving things into play, fast forward, etc etc, but it turns out it uses a motorized gear system. The play motor is some sort of weird stepper motor or something, its got its own little PCB with a 7 pin connector. This complicates things. Maybe I can find out how to control the bidrectional motor for steering, but Im unsure if It could handle the load of steering [a] moving wheel(s). If not, I'm thinking I can make some sort of wicked RC device, like a blender, or something... any suggestions? Theres the aforementioned bi-directional motor, and a gear motor to work with. And some fucked up mechanical gears and junk. The case is the same for both VCRs, so I'm assuming its universal.
As for lead acid batteries, I can get them for about 10 bucks at the local Princess Auto. They have various shapes and sizes, I could definately find one to fit in a VCR. With some modifications