Thats a goos idea, but would need to have more police on roads instead of cameras. If 2 cars are doing 50mph in inside and middle lane, gns have to overtake.
Personally, I think there should be a personal numberplate for individual drivers in the uk. One a cop car can scan. So when you drive somewhere the police know who is meant to be driving that car and experience. Not a big plate, just like one for those who pass advanced driving courses.
1000 might be excessive though but yeah a nice big 500 should do the trick.
Police just need proper computers in their cars so they can mark down notes on registrations so other police can view. I.e. "pulled for doing 40 in 30, warning given, 1st july 2013"
Keep it at 1000. People would never go in it then.