Hit the exact same problem at same point (16/19). Bit annoying it doesn't allow sight of the races to give a clue what to buy, but not too critical of the game as had a fair few hours of fun t get here. If you find out another way do post the fix - will search wider too.
It does, I never hit this snag as I was probably higher level than some from racing online and event list. I had the Ferrari R3 car by that time so a GT car is what will work. I also heard a Vette would work as well but not sure on that.
I've seen this exact problem many times now and I'm wondering how I avoided it. I just completed season 10 last night and I always had a car available in my garage for the races. I'm wondering how my driver level was high enough to avoid this considering I've only raced 3 races online against others and all other time has been spent in world tour mode. Maybe because I always chose the races that gave bonuses towards driver level when they were offered. To answer the question, you need a class R3 car with a GT2 bodystyle. --- Xbox Live Gamertag: GamerX32104 Playstation Network ID: GamerX32104