I've gone 150 MPH in a GT3 with it on the roof - it was fine at that speed.

 

I could never get the sound right, but I do like the versatility of the GoPro - you can mount it anywhere. I've had it suctioned to the side door up to 140 mph, stuck to the top of the splitter about 4" off the ground in front of the car, or like this video mounted on the rear of the car. For the price it's worth playing around with.

http://www.youtube.com/watch?v=hj1VPHoTti0

 

i am considering buying this could you guys show some pictures where you mounted the camera or do you just use the suctioncup on the outside of the car?

 

VAN, I was wondering how to do you get the overlay of information on your videos?