I can't see how the traffic can use cars that are not road legal, if they pulled and did you the evidence would not stand up in court. The police are there to uphold the laws not break them. They would have to be taxed, and registered like any other car. Image if one of them cars was involved in a major accident and it showed as unregistered, what a claim that would be.
They may have 3 or 4 cars the same colour and make model and made to look the same.
Just my 2p worth.
Ed.
Just what i was thinking.
Grant
Aye...urban myth i reckon...or as they say in chewing the fat..." I smell shite"