http://www.telegraph.co.uk/telegraph/multimedia/archive/01381/lamborghini_1381243i.jpg
There is fierce competition for the world's fastest police car with the Italians and Germans vying for the title. Up until now the police prix d'or has been held by a Lamborghini Gallardo which an Italian police patrol is using on the Salerno-Reggio Calabria highway. It is capable of hitting a top speed of 192mph, which is probably ample to keep up with the most reckless of motorists

http://www.telegraph.co.uk/telegraph/multimedia/archive/01381/brabus_1381251i.jpg
But the Germans have their eye on a car which would leave the Lamborghini trailing in its wake...

http://www.telegraph.co.uk/telegraph/multimedia/archive/01381/porsche-austria_1381240i.jpg
Meanwhile in Austria, police are testing a Porsche 911...

http://www.telegraph.co.uk/telegraph/multimedia/archive/01381/us_1381237i.jpg
In San Diego officers are using a custom made police car with integrated shotgun mounts and a top speed of 155mph

http://www.telegraph.co.uk/telegraph/multimedia/archive/01381/ferrari_1381245i.jpg
UK police officers have driven a Ferrari 612 Scaglietti, but purely to promote road safety

http://www.telegraph.co.uk/telegraph/multimedia/archive/01381/smart-zero_1381239i.jpg
But if British police cars are not the fastest, the four electric Smart Cars used by Scotland Yard are the greenest with the lowest carbon emissions