We all know that Dubai is a city where the rich gather to spend their money. We also know that the country is immensely rich thanks to oil industry. They probably have so much money scattered around that they decided to give the police, several supercars.
I will try to keep it short. The Dubai Police now has a Chevrolet Camaro SS, a Dodge Charger, a Ferrari FF (they call it the FV), a Mercedes SLS AMG, a Aston Martin One 77, a Bentley Continental GT, and the most recent acquisition is a Lamborghini Aventador.
What is next? Bugatti Veyron? Ferrari LaFerrari? McLaren P1? In my opinion, this is a waste of money. Spend it with those you need it.