Even a decade or so ago there was a gentleman that was able to produce, with his own money, much higher MPGs by merely using add on parts for better air control around the car, mostly in the ground effects region, much like F1 cars did back in the 70s when the Elf Torrelle 6-wheel car came out.

With new "tools" comes new insights. Will be interesting to see how far they push the limits this time.

Bruce S