I am liking Makato's in post #27 as far as lettering and shadows, but for continuity here is my suggestion. Get rid of the concept car. Start with a regular track package car, then go with RHYS, then go with a stock sedan, then go with the DUB sedan.
I don't like the concept, blue, race, sedan, just does not make sense. OR better yet, just keep it simple and post one of each, no need for 4 cars, just cluttered IMO.
I still think the one we have is really good, but I do like the update look of #27 as I stated above. The current one has unique color and pattern, and appears balanced to the eye. The middle could use some clean up as that logo thing always looks like some southwestern indian symbol to me and I never really got it.