This is the WAVE (it stands for Walmart Advanced Vehicle Experience). It is a concept tractor trailer vehicle that can run on a variety of fuels and is supposedly up to 20% more aerodynamic than even the best truck today. Walmart no doubt makes a ton of deliveries using tractor trailers and semis and this concept design can potentially save them a lot of money on fuel alone. For now though, it’s just an idea but hopefully something along this line will make it to the road.
On top of that new engine is a cab that includes sliding doors (rather than hinged doors), a center-oriented driver’s seat, and the first ever carbon fiber trailer (with single-piece 53′ carbon fiber panels).