[The Great RJ]

I have long wondered why semi trucks were not more aerodynamically designed. I have see fairings on the top of the cab to apparently reduce air turbulence in the area between the top of the cab and the trailer, but the front on the truck always seems to be a flat surface. I remember that experiments in the 1930s with making the front of steam locomotives more streamlined failed to produce any significant improvements, but with today's computer assisted designs could a truck like the WAVE become more common?

[Two Kids' Dad]

Or why not use existing research and shape the front of the truck like any number of the jets currently in the skies? Some low profile fenders over the front wheels and they’re golden. Put the driver in front of the engine (a mid-engine semi if you will) and use ducts to feed air to the diesel.