The range results were impacted by the 21 inch tires and the temperatures.
With outside temps of around 85F and cabin temp set at 68F, there was around 17 degrees of cooling required by the AC.
Also his battery temp was up in the high 80's so the cooling vents would have opened? raising the Cd and the active battery cooling would have been on.
Not too much is talked about the drop in range at higher temps. The best range should be at around 70F. At higher temps it appears range starts to fall off fairly quickly.
It would have been interesting to see the test done at 70F.