i dont remember what NASCAR game for ps2 it was but it was a great career mode. You had your team, and had to buy your cars and engines and it took a certain amount of weeks to build things up, and you also had to do R&D to get faster. I played so much of that. Now there isnt even a career mode or anything like that, what happened from that point to now. oh yeah exclusive rights.
Rfactor is set up for this it is just that no mod team has made this happen, you have to buy parts and upgrades for your car, and run seasons to earn money. But there isnt that much of a demand for offline racing compared to the online side of things in PC.