There is certainly no shortage of Mustangs out there, but this Ford Mustang is very different. Not only has it been upgraded by esteemed tuner Saleen, but it's also a police car. Well, kind of. You see, this is a 2007 Saleen S281 press car built to help promote the blockbuster Hollywood movie "Transformers". It never officially joined any police department, but it can still easily pass as a cop car. And, lo and behold, it's up for sale.

Mecum Auctions is offering it at a now-postponed event that will likely take place online at a yet to be announced new date. Offered at no reserve, this Transformers "Barricade" police press car is still a serious muscle car. Based on the fifth-generation Mustang, power normally comes from a naturally aspirated 4.6-liter V8 rated at 300 horsepower and 320 lb-ft of torque in stock form.

However, this is a Saleen-built supercharged V8 (the S281 Extreme) and output increases to 550 hp. Power is directed to the rear wheels via a six-speed manual gearbox. Other enhancements include a coilover suspension, ventilated disc brakes, and Pirelli P Zero rubber wrapping 7-spoke wheels. Cosmetically, there are tinted windows and a paint job with police-like livery. Notice the "to punish and enslave" scripting along the sides.

Other exterior upgrades include fog lamps, an emergency lightbar on the roof, and a front push guard bumper. The interior is adorned with black leather, air conditioning, power driver's seat, power locks and windows, CD player, and a 200 mph speedometer.

The rest of the interior is stock 2007 Mustang. And yes, this thing is fast, like any Saleen Mustang. Try a 0-60 mph time of less than 5 seconds, about a 12-second quarter-mile, and a top speed hovering between 150 and 160 mph.

There are just 4,690 miles on this unique Stang's clock and, as far we know, it's fully street-legal. However, its new owner will certainly get a lot of attention, but it may not all be good. Chances are, local police departments are not going to like seeing this thing driving around town. Fake cop cars are both fun and confusing.