I am going to be filming a series of car chase scenes for a short I am making. I have suction cup mounts to attach to a couple of cars. I WAS thinking gopro2 but at $350, it doesn't quite grab me. Any suggestions for a cheaper camera? I would like to be able to install 3 cameras on two cars. I was thinking something like a Flip or something that if it falls of and gets ran over... meh. I am looking for at least 720p to work with my t2i footage.