What is up my brother! I am definitely a white guy. Anyways, This whole moving phototravel thing is a very good idea. I don't have time to try it, so I'll let you do your thing. The first moving Accord R is a really neat photo; the colors work really well together. The first CSL pic is awesome, all except the back rim, like you said.
I don't know if I just studied the second CSL with a more scrutinizing eye or what, but I noticed a bunch of mess-ups. I know you did a little layering and cutting and deleting, but you cut too far away from the body of the car. There is a very bold, bright, unblurred line left over from you first layer running around the rear of the car, especially. Second, the rims look a little funny, as you said. No biggy. I realized why you "tint" the windows: so you don't have to worry about the veiw through the windows being unblurred. Good thinking.
That cut line is definitely the most obvious problem, so next time zoom in further so you can get that line a little closer. You still put forth a better effort than I could manage, good job.