I am constantly blown away with how efficient the Clarity is. My wife took it on a 600 mile round trip to Omaha this past week, starting with a full charge. She only used 13.2 gallons of gas. Most of the driving was at around 77 mph (indicated by car). Assuming about 50 EV miles that is almost 42 mpg. Again, at 77 mph. For comparison, I drove my i3 Rex this past weekend 180 miles on a full charge and 3.3 gallons of gas at about 60 to 65 mph. Assuming 70 miles on electric that is only 33 mpg at much lower speeds. The air drag is a lot worse on the i3, so higher speeds will lower it, but 65 is slow enough not to be terrible, and the fact the Clarity was averaging so much faster and still doing better speaks volumes to how thermally efficient that engine is. I really want to know what the Cd is for the Clarity as well, maybe better than I think to get that kind of mileage.