Dynamic angle and well shot, but it looks like the car's being dragged sideways due to your artificial motion blur. No wheel rotation makes this more obvious. Lovely car.
blurring the background does give some impression of speed, but the wheels being so sharp and defined and the tyre treads being clearly visible dimishes the impact and makes it look a bit odd. possibly blurring the bright reflection in the door would also help. to be honest, the prowler is such an unusual damn sexy menacing looking car that even stationary it would look quite imposing and dramatic. it's a good choice of car, i think the angle and crop is well done and interestingly different (cropping close to the top of the window accenuates the squatness of the car). 6.
Tried to figure out the pan on the stationery Prowler & couldn't get the background on the left and right to coincide with the view through the rear window.. It seems like it may have been a heavy dose of PS. Its an interesting shot though.