Just completed a 1703.8 road trip: Phoenix-Anaheim; then Anaheim-North Oakland; then N Oakland-Tejon Tanch, and then to Phoenix. Great car on the highway, of course, but a few things stand out:
1. Charge time adds 40-50% to ICE drive time. If you stretch out the charges to the max distance to a supercharger [150-200 miles], it takes a l-o-o-o-n-g time, 1hr 20 minutes to charge to full at each stop. Phx-Anaheim took 9.5 hours, of which 2’45” was charging. That ratio was a bit higher on the next two long legs of the trip. And you can’t drive 75-80 MPH, which is 5 miles over, consistently, as it eats too much battery.
2. OR you can follow Trip Planner recommendations, which have you charge for 30 minutes or less, or just enough to get to the very next Supercharger, which might only be 50 miles away. But if you do this, you will make more stops. It comes out about the same.
3. The TP recommendations seem to assume about 330 wpm, or about 60 mph, in my experience. Coming home, I left Quartzite with 150 miles in the battery and 98 miles to the Buckeye Supercharger [note: if I charge to full at Quartzite, I could be home in 151 miles. Charging to 150 miles only took 25 minutes; charging to full would have taken 1’20”]. Leaving Quartzite, I immediately sped up to 80 mph, and TP instantly changed my next stop from Buckeye, 98 miles away, to Wickenburg, 92 miles away. But the road to Wickenburg is on 2 lane US 60 with much slower mph driving speeds than on I-10. Distance home was the same. Go figure. I had a similar experience driving from Oakland. I left with 250 miles in the battery, plenty for the 178 miles to Harris Ranch, IN THEORY; but it’s uphill. So trip planner took me only 25 miles to Dublin, recharge for 36 minutes, and then to the next supercharger at Manteca, only 41 miles, to charge for 43 minutes to go to 132 miles to Harris Ranch. There I had a leisurely lunch in its terrific restaurant and charged for 60 minutes for the 118 mile run to Tejon Ranch.
4. Sticking to trip planner recommendations for superchargers can add significantly to journey time. The google maps round trip ICE driving distance for this itinerary is 1546 miles. I was taken on several strange detours by TP which added 157 miles to the trip. This is 2+ hours, which is not de minimis.
5. If you are driving a completely unfamiliar route for the first time, as I was, you spend almost every minute monitoring your watts per mile, the estimated remaining miles, and miles showing left in the battery. This does not make for a stress free trip, at least not for me.
Bottom line: you can’t drive at speed, which is very frustrating in this beast, and you must expect to take a lot of time for charging. IMHO, there are serious compromises to taking this car on a very long trip.