A race is hard on the body and mind since you are not only using your body on the race, you also need your brain because you aren't going to win the race without any knowledge of the road or your own vehicle. Also, it takes lot of practice to hone your craft and this case isn't something new, so you need to hone your skills here too. If you want to improve your driving skills then you need to drive your vehicle as fast as you can while making sure that you are on top of your vehicle. It just mean that you are in control and nothing bad would happen while you are it. You won't have a good time if you have an accident while driving your vehicle.
In this case, you be driving a pickup truck in a race course, and you need to make several passes. There would be lots of other vehicles on the road and you need to surpass them all if you want to get the first place. If you think that it would be the end after that, then you need to think again as there are more race after that. Things would be harder from then as the game gets harder and more challenging as you make some progress.