1. At this moment we have 2 car markets - low end and high end car market. Idea is pretty good but needs some improvements. First of all you shouldn't be able to put your Prairie for sale at high end market. It's very far from "high end". An easy solution to that problem is to have price requirements for both car markets. Anything above $60 000 can go to high end, everything under $60 000 goes to low end.
2. Low end car market is positioned very poorly. It's very tight there, hard to manage around. I also got an better place for low end high market. Here:
Pros: Open area, many parking spots, near the airport - new people can get their car license done, rent a CityBee and maybe even get their first vehicle from there.
Cons: Can't think of any.