I like the first one, nice low angle.
The second one, the car almost blends into the armco behding it colour wise, and the blown highlights below the fin at the rear are a bit distracting.
Third one - nice clear and sharp image, could maybe do with a touch more space in front of the car to give it space to move into.
4th one, works well, good contrast wioth the background, nice and sharp. It's cropped tight, but it works for this image so I wouldn't change it.