So I've got a portable dvd player with a flip up screen and although it doesn't advertise that you can play games on it, through inventive use of cables, I've made it work. My only problem is a power source for a gamecube on the road. As four of our group of five are entered in the smash bros. tourney it would be nice to practice a bit on the way up. I've never heard of any attachments for the gamecube that would let it run off the car battery, but if there is any advice would be appreciated. Also how much of a drain would that put on a cars battery?