I am sorry but I am not able to convert Wh/mile to real road miles. Is there a formula to do that? I am not a bunny rabbit when it comes to driving but I usually drive in 60-70 mph range. The highways here in MA have 55 or 65 mph speed limits. The advertised miles for the 2020 Raven is 351 miles. But if people are getting only 250-270 then that is around 100 miles less than advertised range. If I cannot drive to NYC in one charge then this car is of no use to me. Or maybe there are ways to increase its range? Would be great if someone could provide more details. We went from Boston to Six Flags last year (in Agawam) in friends Model 3. But we had to go for the superchargin in Chicopee on our way back. Its about 100 miles one way. I think he was being conservative but still. Since there as no provision to charge while the car was standing in open parking lot (which sucks BTW because that would be so much easier) we had no choice but to go to a Supercharger. All theme parks should have charging stations because the cars stand there all day anyway. So coming back to the topic 250 miles is cutting real close if I go for Skiing and try to come back which I can easily do in our ICEs. So even after spending $80+K if I cannot make it back home, then this whole EV transition sucks and EPA should seriously do something about these Fake 351 miles published EPA range with a star at the corner. Very deceiving for the consumers.
It's not FAKE. It's telling you from full battery to empty in good driving conditions and probably not over 65 mph.
The way supercharging works it's not productive (time wise) to charge to 100% because it tapers off. But you can start off at 100% on the start of your trip (when time is abundant). But it's not healthy to leave it at 100% for very long, so you need to "plan" your schedule. Just like an ICE car gives you "range" you never drive an ICE car until the tank is empty either. If you were driving in the boonies you might lean towards not running your ICE below 25% full either. It depends on where you are and weather on how low you want to go. It's a balance of taking time to plan, like targeting your charge to 100% and exactly where your gonna charge vs just not worrying about it and supercharge for 20 minutes where and when it's convenient (to play it safe, even if you might "make it").
Also keep in mind cold weather (i.e. skiing) will take a bite out of your range too (for heater and lost regen).
Does your friend have an AWD Model 3 or SR? 200 mile trip on AWD Model 3 should be easy. But on an SR it's a little tight.
250 miles, with no planning and quite a bit of safety margin for Model X is probably about right. 300 miles with some planning and good weather. In Winter it's probably more like 200 miles with no planning and 250 with planning. Roughly.