I am working on building a solar powered toy car for my own edification. The problem I have is that I do not have enough power to start and continue the dc motor(s). I could add a bigger solar panel but I am trying to think of a way that the solar panel could simply collect the energy, store it, and then release it when the power has become sufficient enough to turn the motor. I would suspect that the car would either move in starts/stops or perhaps get moving and continue moving. either would be fine. I've tried capacitors and 'dead' batteries but nothing is working. I was thinking of adding multiple capacitors in a series. Success would be to demonstrate that a relatively large toy car could be moved by a small solar panel. any thoughts? thank you!