I've just hit 38,000 miles this week. Today's ~42 miles commute to work in 50F weather took exactly 50% of the charge. Since the majority of this morning's drive was at ~65 mph cruising speed, I'm happy to see that I'm still getting 4.6 mi/kWh over all. Based on the readings, my total range for today would be at around 84 miles which is in line with the EPA estimate, even though it's mostly freeway driving and in cold weather. So range loss at 38,000 miles? I think not.