On the normal (not reversed) Africa track with the railtrack, follow the track and turn right when you get to the rails. Follow it and you will end up by the checkpoint with about six seconds off the fastest time.
When playing in time attack mode, you will notice that the records are all set by using the 1.6L car. A 1.6L FWD car is much easier to control than a 2.0L 4WD car, as you will find a 4WD car spins very easily and is difficult to control, whereas a FWD car is more stable. It is possible to adjust the parameters so that that the 4WD car drives closer to a FWD car. This will give the stability of a FWD car and the traction and fun of a 4WD car.
Hold C-stick Left or C-stick Right at the car selection screen to open either door. Hold C-stick Up at the car selection screen to open the hood. Hold C-stick Down at the car selection screen to open the trunk.