The single player career mode feels like an overly long glorified tutorial (overly long for a tutorial), but when you do complete it, there's nothing else. The game doesn't open up and give you a load of choices, it's just, here's what you've already raced, do it again now, and again, and again.
The custom race feature has the potential to be excellent, but you can only pick custom AI cars that you own, so picking a grid of expensive cars takes a hell of a grind first. Also the AI rubber bands like mad in custom races (can't be turned off despite what the settings say), and for some reason you can't turn the difficulty up beyond 3, despite it going up to 5 in some of the other tougher single player races. And speaking of the grind, the payouts in Custom Races are so low, there's no point at all in using it to try to earn Cr.
Just some very odd choices all round. They tried something different, but it's not a better type of career mode than what has come before. I get that people don't want new games to be carbon copies of past games, but make it different and better, not just, different for the sake of it. If I were in charge of deciding on the gameplay loops for this title, and the Cafe menu career was pitched to me, I'd have told them to go back to the drawing board.
So, in short. Not impressed. Despite the game doing some things very well, the single player career mode is sadly not one of them.