I recently saw some 1/64 scale micro R/C cars in Radio Shack. the range is pretty short on them, and they don't run very long, but they looked neat as hell. Apparently, the batteries in the cars are permanent, and you recharge them with the controller, which uses rechargable/disposable batteries. Has anyone taken their car apart? I'd love to know what the 'permanent' battery in there is. I think there are either 2 or 4 different signals for these, so either 2 or 4 cars can be operated simultaneously. Any info here appreciated too. I might be willing to buy a few dead cars if the controller and R/C chip/reciever are still intact. Be neat to power a crane or something..