Sustained 124-mph driving cut the Audi Q6 E-Tron’s estimated range to just over 100 miles. High-speed range loss is a real EV weakness, but mostly relevant on Germany’s unrestricted Autobahn. We know driving at high speed kills EV range, but usually we're dealing with tests conducted at 70 or 80 mph. In case you were wondering, a recent test on a stretch of Germany's speed limit-free autobahn offers up some answers. Bjorn began his test with the battery at 92% and hopped straight onto an unrestricted section of autobahn near Wittenberg.