1. a little dark for my taste
2. like the thing in the background.. but it is a little distracting being off center and it may over power the car in terms of what my eyes want to focus on.
3 & 4. do you have a way to change the white balance on these? if you do try getting the car and background to have less of a yellow cast it may help the picture out a bit
Your car is in the center of every pic, and all these are underexposed.
When taking pics of cars look at the angle that most are taken at. It's rare to find an interesting one where you're straight on either side or front. Try some at an angle to give the car some dimension. It looks a little flat.
LOVE these cars. I want to get an Ultra Lux model some day.
you may be can try to reflect all the building element into the car windscreen, by doing so you can capture more detail of the car, if you have black car you can do it on the whole car. ....not sure how it will turn out...buy might wort a try.