Love that video! We did a lot of 0.30-scale tractor-trailer wind tunnel testing for Ford back in the mid to late eighties and I see a lot of the same features on Big Red. All the testing I recall used a conventional tractor rather than the cab-over design, however. Side skirts, close coupling of the tractor and trailer, flush wheels, etc. were tested, funny it took 20 or 30 years after Big Red for those features to finally make it to the road. Once they did make it to production trucks, they made it sound like it was some new earth shattering development. It doesn't appear that Big Red has any boat tail treatments, however. These can be very effective when they are deployed. Seems like most truck drivers on the road keep them folded in....