If you want to break 50 miles per charge, don't take the freeway. I don't think it's possible with significant 65 mph freeway mileage. Take <45 mph surface streets. Or stay at 55 mph in the slow lane and risk road rage, trail (at a safe distance, not advocating drafting) an 18-wheeler or something like that.
Probably you do this once just to have done it, then go back to normal freeway driving
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Probably you do this once just to have done it, then go back to normal freeway driving