Uhhhh.... The Lamborghini Gallardo is an Italian police car gifted to them by Lamborghini, can't you see the words POLIZIA emblazoned upon it?
The photoshopped Peugot convertible you showed is not a highway patrol car. A police car is not an open top convertible. It is supposed to have more than 2 seats and least some police equipment. The french wouldn't write the words "HIGHWAY PATROL" on their vehicle, and you showed an Itlian flag on it. Your spain's Audi TT also has an Italian flag on it.
The porsche you showed is not from england. "Bloomfield Police" and "911". England?
Mahindra is not "Jeep". Jeep is a registered trademark of Daimler-Chrysler.
See this link for a report on the world's police cars. It has the specs, pics, top speeds and 0-100 times for all the police cars:
http://www.geocities.com/parry_mathur/polizia.pdf