While it is true that you need to upgrade your car every time you have the money to be able to compete with the best in the industry. You also need to understand that if you don't know how to drift then you can't compete with the best after all, even if you have upgraded your car.
This game requires you to do some drifting, so you will get a lot of practice. You also need to remember that you can't proceed to the next level without getting the first position. There are five levels in the game that you need to master.