This one seems as though it's been post-processed to include some of the blur too. It was probably an out-of-focus shot to begin with (or more likely poorly panned), but with excellent composition and obviously at a good point in the race, so he added the radial blur around the outsides of the car to make it look as though it was shot at a super-slow shutter-speed. It looks post-processed as the rear of Massa's car and the front of Button's are softer than the rest of their cars and the lines of the grid-boxes at the top of the image (the left-side of the grid) - hence why I suspect a touch of radial blur has been used.
Don't get me wrong - I do my fair share of post processing myself (I'm actually doing some on a load of school portraits right now... I'm just taking a coffee break), and if it can rescue an image like this then that's fine, but I suspect at a decent desktop res (say 1680x1050 upwards) it would look a lot poorer due to the original image just being too blurred in the centre.