In October 2008 a story appeared about a company called Carbon Motors whose main intention was to make a purpose-built police from the ground up. The car is called the E7 and it's made of an aluminum body structure and features things that can only be found in a car dedicated to policing.
The Carbon E7 measures 200 inches, it has a wheel base of 122 inches and features a track that's 66.9 inches front and rear. Wrapped around the 18-inch wheels are 245/50R18 tyres with 14-inch vented brake discs in front and 13-inch vented discs in back. The car uses a 3.0-litre turbo diesel engine that is claimed to produce 300hp (221kW) and 420 pound-feet of torque. It has a 6-speed automatic transmission driving the rear wheels and will cover 0 - 60mph in 6.5 seconds.read more here and here .