bjerrems wrote:
GoPro for me. Works every time!
Probably pointless responding to this given it's age. Although I have to agree GoPro Hero's are a great compromise, especially now with the Hero3+. You get a variety of professional recording formats; 1080p plus Cine modes, which can add a more dramatic effect to a storm building up. They can be mounted in the car - and anywhere else you can think of and they are waterproof.
Get one of the little Gorilla tripods and your mounting positions are limitless, you can even use them to mount the camera to a wire fence while you stay dry in the vehicle.