[petroboy]

Last month I impulse-bought a $99 Epic "Action Sports Video Cam" at Costco that was smaller than the GoPro. It absolutely has all the limitations that Randy listed in his early post, but it's an easy way to test the video waters and the video quality isn't horrible for my very basic purposes (mostly cringing at my blown corners).

It runs on AAA batteries so it isn't teribly expensive on that front.

When stuck inside the car, it has a big problem with any glare from the outside - wet grass or track or bright sunshine. It tends to wash out frequently in those situations. The audio is surprisingly good, however.

A buddy and I zip-tied it to his iPhone suction mount and stuck it on top of my car to try to resolve the light level problem. That worked, but of course the audio was terrible and it made the car look like a TeleTubbie.

All in all, I completely agree with Randy. It's a cheap way to try out the idea, then move up if you want good quality and data recording.