Taped it, but havent watched it yet, was it an unmarked MK4 or just a MK4 that police use?
We have unmarked Skoda', Volvo's, BMW's, but then CID have loads of crappy cars like Skoda Fabia, Peugeot 206, Vectra, And have a quite nippy 10 plate 1.9 Leon.
Our old Chief Superintendant wasn't a big fan of traffic police, and as such not much was spent on them, If you look at Warwickshire, they have a tiny traffic dept, and that's how they afford the R32s, Imprezas, etc.