Ex-police car - buy or avoid???

[Octane_Flash]

I'm looking to buy a FGII XR6 Turbo and there are some good looking units with F6 rims and Brembo's for sale.
Upon further investigation the couple I have looked at are ex-Highway Patrol cars. I have seen the service history and they had regular 10,000km servicing.
The car I'm looking at has done 80,000km and still has a year until warranty runs out or if I drive it over 100,000km.
The interior isn't marked and for all intensive purposes only a trained eye could tell it is an ex-police car.

Has anyone purchased an ex-police vehicle and had a good / bad experience with them??