The main idea of the mod - there is no longer an NPC, every truck in the game is controlled by a real person, and there are a lot people playing on the servers. However, now you can surely play ETS 2 on the Internet, fulfilling the transportation, delivery, or just riding with friends or strangers. The project is still in the alpha stage of testing, i.e., the modification is still far from complete. That's how began the project of Euro Truck Simulator 2 Multiplayer, or ETS 2 MP. However, a huge community of fans and modders of the game decided that it was not fair.
In fact, Euro Truck Simulator 2 game from SCS Software does not have multiplayer, i.e.