[javadog]

Find better backgrounds. In each photo, there is something distracting behind the car. Look for angles to get rid of these things. For example, in the two shots of the car driving down the road, choosing to take the photos at slightly different times would have perhaps eliminated the pole that appears to be growing out of the trunk in the first one, or eliminating the other vehicles in the second one. Changing postion, changing focal length and waiting for just the right opportunity to click the shutter can make a difference. You could also use a much slower shutter speed to blur the background, which is nice in a moving shot. Reduce the ASA setting if you need to, to allow a slower shutter speed and a wide aperature (to minimize the prominence of the background.)

In the static shots, the stripes on the ground are distracting, as are the reflections they cause. You'd have to have moved the cars to fix this. Consider using fill flash when shooting and reducing the brightness in the editing phase.

Have fun,
JR