Apart from what @Sunstrider says, this truck would make no sense to be included in ETS2. Keep in mind that in Europe, the regulations for trucks, buses, and heavy vehicles in general are not the same as those applicable in the United States. For exactly this reason, European trucks are different from American ones due to limitations in dimensions, weights, axle distances, etc. Therefore, this truck you mention, apart from being a concept that will take a long time, if it ever comes to become real, would never reach the European market, so it would make even less sense to incorporate it into a game.