Maybe not what you want to do, but if you are only interested in recording video from you RC car's point of view...
**broken link removed**
$14 shipped, there are a lot of similar items, and similar cheap prices.
I've done the car with video camera in my backyard, it's okay for a day or two. Sit on the couch in the living room, and chase the dog around on the TV screen. Would be a lot nicer if you could pan and tilt the camera.