I don't tend to do long drives (I'll fly when possible) but I wanted to try out what it's like to drive my MX 75D on a trip requiring multiple charging stops. The Auto Pilot (HW2) was as useful on a long drive as I would expect it to be. Not having to press the peddles or steer meant I could move around more and be more comfortable. I deployed my "Auto Pilot anti-nag" device to good effect. I spent hours driving without a single nag. See a photo of my device below. That is is a 2.5 pound weight for a weight stack machine. The trip is about 5.5 hours by normal car. It took me 9 hours to make the trip due to charging (1.5 hours) and nasty traffic in Baton Rouge. If I wasn't forced to go into Baton Rouge to get power, I could have re-routed and saved about 2 hours. Something to think about when making my next battery size decision. Returning I had no traffic and did the trip in just under 7 hours. Both supercharger sites had plenty of options to take a break while charging.