It's the same for everyone ifs a glitch in their game and won't be fixed until the next update this suckling as I've only got one car and can't do anything after 4 races as I have to repair
I know the feeling I've lost everything since the update and now I only have one car and it won't let me buy another it sucks big time if my only car wasn't a maxed supra I wus have started again
I have the same problem also I've found you need gems to buy cars that are cash price I only have one car and can't buy another one be coz of this in my opinion this update sucks