If the above tweet is correct. If perhaps there isn't a TS5 anytime soon , I truly hope they focus on fixing the core of the game and not just chug out more and more content without fixing the base game problems.
Also I think if we do get cars, it most likely will be just like TS2 where there is a small animation when it goes out. But I would be all for fixer-upper cars and such. Oh! What if we could sell them too?!