I have heard of something along those lines, but not too sure what actual equipment they have in thier vehicles.
Cant believe you never heard of ANPR.
Automatic NumberPlate Recognition.
Many traffic police cars are now fitted with a high-resolution camera at the front, which scans every single number plate it can capture and read. The computers on these cars feed the number plates into a central computer via satellite or some GSM device, and it checks for insurance, license, reported stolen, outstanding warrants on the keeper, MOT, tax. Anythings possible really.
Of course, for this reason, many more cars get pulled over now for having illegible number plates. ANPR cannot recognise plates in funked up fonts and different sized letters, and a black screw placed conveniently to make a different letter. Its now no longer acceptable to have a piece of cardboard with black biro writing on it, as a number plate on a trailer etc. I saw a lorry like this yesterday. Couldnt believe my eyes. I couldnt even read it from 5 metres away, what chance has an ANPR got?
There are also cameras permenantly by the road side known as SPECS which scan number plates at 2 locations, time you between them, and work out your speed.

Clever stuff. I always laugh at people who speed between these, then slow down for the cameras.
