I believe it ispractical enough. With guys spending $1000+ on multiple game camera's, this is not that far fetched. Theft could be prevented in the same way newer cars are protected with alarms/alerts.

You would have to be careful about what kind of terrain you drove into. Worst case scenario would be the owner having to go and 'free' the robot from entanglement. This wouldn't be any worse than a trip to check a game camera.

I don't even own a game cam, but I bet there are folks who would buy/use a robot if available.