Everything will be hell for you if you are not going to sit down and relax. This is applicable in almost anything that we do. On the road, you will surely have some accident if your mind is not clear and this is the same reason why it is hard to get a driver's license.
The idea here is total destruction. You will need to destroy anything that you see. At the start, you will be facing off with vehicles that can't defend themselves, but as you go further, there will be more vehicles that will be too tough for you.