I looked around for an in-car camera mount for my digital camera (for the strip and the road course) and couldn't find what I was looking for for less than an arm and a leg and stumbled a thread on an M5 board (I'd link it but that site appears to be dead???)
Looked like a great idea so I tried it and it turned out great. Really just a PVC pipe and some U-bolts w/wingnuts. I even added an extra joint to pivot up/down. Not bad for $8 and and 2 beers worth of time.
$8 camera mount picture by Desert_Rat_46 - Photobucket
$8 camera mount in car picture by Desert_Rat_46 - Photobucket
$8 camera mount p-side picture by Desert_Rat_46 - Photobucket