Generally I really don't mind overcooking when it comes to auto/motorcycle shots - it for some reason works for me, as does this processing. my critiques are not process related.
1. Probably not your fault because I've seen clouds do this, but the upper right hand corner clouds look like the shots were misaligned. Like I said, I've seen this happen naturally so maybe it's because the other clouds are "normal" or maybe because they're in such a conspicuous place but it's distracting.
2. I think there is too much of the blacktop in the shot. It puts a strange emphasis on the ground.
3. Your reflection in the bumper.
4. That roundish flare just intersects the line of the car. If it "framed" the car a bit, like slightly behind the car but not touching it, it would be awesome. Again, not really something that you did wrong, just distracting.
Those are all just my opinion and like I said, I like the processing. It's enough to look extreme but not so bad that you have really horrendous halos around the car.