You need to load up your truck and then get it to its destination. Not only that but you need to park it once you get it there. If you crash the level is over and you have to start over. Once you pass a certain amount of levels you can unlock new trucks. This is not about perfection. You need to complete the level as quickly as you can. This will earn you more overall points. The levels will get progressively more difficult. The loads you carry will be more awkward and difficult to place and the path you travel will be longer with tighter turns.