Pretty good attempt at a difficult challenge. Would be better if subject were sharper, try matching the motion more exactly or slightly faster shutter speed.
I had a good think about this one ... the car is not as sharp as it could be but with the plain background this may not have given as much of a sense of motion. Also, the tail of the car being missing and the nose having some space to drive into works well, giving the impression that the car is moving through the frame. I think on balance, though, I would like to have seen more sharpness in the car - certainly the police would need it if they wanted to prosecute the driver for using the telephone while driving!