What really distracts me about #1 and 2 are the backgrounds. (and on #1 the front of the car gets much too close to the edge of the frame.) I'm guessing you were at a car club meet and had no control over the placement and background. If you can control the car placement then you really want to watch the backgrounds.
I wish #3 was lower so that the car is "grounded" to the road. It's in just a bit close -- but I do like the angle, lighting, and background.
I like #4 but would clone out that lone light pole on the left, and the phone wires above. Darken the parking lot (burn) to help the car stand out a bit better. The front right corner on the car is a bit bright.
I'm not nuts about #5. The ground is un-level... too little to look deliberate. The front right quarter of the car is well lit, but everything else looks much too dark and looses detail (e.g. the grille)