I've only had the MS 11 months, but 25K miles.Sounds like you have done several long trips... which ones have been your favorites or least favorite? Also does my NM trip sound doable solo?
I find that driving the long trips is quite easy, much easier than an ICE car. Taking breaks where you just walk around instead of the game of seeing how long you can possibly wait to stop without your bladder exploding is much easier. On long max travel days i typically go 12 hours, but only because i'm not crazy about driving at night. 12 hour total, not 12 hours driving, Bigger battery cars can skip superchargers (or just stop for a short break) after a longer charge at a meal stop. I don't skip stops, but definitely stop for a shorter time after a meal stop.
I'll take some of that route in October and will run from Tucumcari to just west of San Antonio in a day.