Driving a truck is dangerous if you don't have the knowledge and experience needed to drive it. You might be able to drive a car with no worries, but driving a truck isn't exactly as easy as driving a car. Its body is too big to be easily maneuver and that can be a huge problem for you if you are not that experience.
As if driving a truck isn't going to be a problem for you already, in this game, you would also worry about the enemies trying to shoot you down. These enemies comes in helicopters and vans trying to shoot you down. You need to avoid getting shoot at and shoot them down too. However, the downfall is that you only have a limited missiles. You would need to look for more in the crates by crashing in to it. But, crashing could bring your truck some damage. The idea here is to get as far as you can. You earn money base on the distance you traveled. You may use the money to buy some upgrades for your truck. Enemies are already a problem for you, but another problem that might crash into are the blockades and crates that is all around the highway.