Is That It?

After playing for a long time I have finally got to 900 cars in my Gran Turismo 5 garage. This represents a large amount of effort and time playing. Also, the process for buying cars in the dealership is laborious and boring.
All I get for reaching nine HUNDRED cars is a bonus colour and car horn! I don’t even customise my cars with these.
Some money or game points would have been rather better!