There is no "half admin". What I should add to the site is ability for members to rename vehicles in a kind of temporary list: changes would have to be validated by admins before really applied. It would be faster for admins (just click yes or no, or possibly modify what was entered)
But that would be for... later, when I have time to add that.

About the wagons, a problem with US cars is if we include or not the "wagon" name in the model name. For European cars we do it, but for US cars it depends.
For example the Taurus has it just as extra info.
Also the problem of the trim level combined with that.
If we put the "wagon" in model name, the trim level goes after it, and it causes problem with the Caprice from what I got ("chevrolet caprice estate classic")

A problem of the site is consistency of information. For that I should store vehicle info differently. I did not do the original database design, and I should really redesign it some day (especially for all what is around trim level and body makers)