Japanese people = SMARTEST people ever

That's a great idea and a great invention. I think it ought to have a timer however, since some people don't drive as much as others. For example, the elderly might only get out of the house once or twice a week, so they really wouldn't need it to run continuously or as much as someone who drives their car at least daily or several times a day. Also, people that use their garage might not be able to benefit from this as much, although it would be helpful when they are not home and parked in a hot parking lot when shopping, for instance. I would love this for my car! The solar panels should help with the A/C as well as features such as radio and lights, that way the battery wouldn't be used as much and much more energy and resources would be saved. I officially LOVE this idea of solar panels on the roof of the car and am excited!