320 miles from Portland Oregon to Pullman WA, not many charging opportunities after Tri Cities WA. We stopped at EA in Hermiston on the way out and back, which is half way. Charged to 95% in 35 minutes. My wife drove three of the four legs and averaged 4.2 miles/kwh at 65mph. I drove the last leg at 75mph and dropped to 3.5 miles/kwh. Conditions were idea 60-75 degrees and mostly flat, little wind. definitely notice a difference over 65mph. most of our 18,000 miles have been around Portland, rarely drop below 40% charge, so I drive it hard the once a week I'm in it.