A truck driver is always on a rush because he needs to deliver the goods as fast as possible. Regardless of what it is made of, it needs to be delivered as soon as possible as people need it and whatever company needs it needs the supply as fast as possible. In the trucking business, you can't choose which goods you will be delivering. That is why, you see those truck drivers always on a rush. You do understand that you won't caught them doing that if there are law enforcers nearby. Even if they are in a hurry, that would not exempt them from the law. No one is above the law and everyone knows that.
As you already know, truck driver are always on a rush. However, this game takes the rush season to the extreme as the truck could be crush if it can't cross. The obstacles are blocks going up and down. if you get caught then your truck would definitely be crush. You don't go charging as you need to have some timing on your side or the block will destroy your truck. the game is played via mouse and the idea here is to reach the end of the screen.