(taken by this guy) I'm wondering how this is done, although this isn't the best example of it. The car is perfectly extremely crisp, while the background is heavily motion blurred. This is the best example I could find, but you'll see it sometimes on automotive websites where the effect is a lot more dramatic. I understand the theory of how this would work, I just don't understand the mechanics. It seems to me that the car (and the car carrying the photographer) would either have to be going the same speed, but very fast in order to use a faster shutter thereby keeping the car sharp, but stll blurring the background. Or else the camera would have to be mounted securely to the car so that a slower shutter speed could be used. But then, I'm figuring there must be some third technique that I just haven't considered. Neither option really seems all that reasonable. So what do you think, is there's a specific technique used for photos like this?