In a race, everyone is focusing about winning and they tend to forgot what they need to master in such event. You need to master drifting before becoming a champion racer as there are lots of quick turns in the game. If you can't do that in a such a fast pace, then you can't be one of the best. Everyone can race, but only a few can master drifting.
Luckily, this game will focus on your drifting as you will know how to master the craft. Like any game, there would be some rewards if you master it. You will unlock new track as you made progress in the game. You can use the money to upgrade your car.