I know the GoPro price is a bit high for your need, but FYI to the board, here's a pan view from GoPro mounted on my rollbar:
camera takes both 30fps and 60 fps for super slowmo...great for the track and other purposes, and can take 32Gb SD cards.
You can run video/pict mode while charging for those long trips...pretty cool camera, but it is expensive; that's the major downfall for this camera.