I think I saw at least one other report of this: I was on a trip and the energy display to my destination would refresh briefly to a 10% higher number for a few seconds before going back to the previous pessimistic projection. I may have figured out what was going on, at least in my case. The details: I was making a trip from my home in the mountains to the Blanding UT Supercharger Station (camping trip in Natural Bridges National Monument). With a 90% charge, the energy projection had a surprisingly low 6% projection for my battery at the destination. By contrast, EV Trip Planner said I can make it easily, especially in the downhill direction. So I set off, figuring I could drive slowly if necessary, and after ten or fifteen miles I saw the destination energy projection cycle briefly from 6% to 16% then back to 6%. It did this several times at random intervals. Had me puzzled. Then I noticed that "Tessie" the nav system had me making a turn at a highway junction when I always go straight. Sure enough, when I passed that junction Tessie recalculated my route and my energy projection fixed on 16% remaining; I eventually got into Blanding with 14%, driving the speed limit on cruise the whole way except for some really fun twisties (I always zoom through those). So, for reasons I don't understand, Tessie routed me over the mountains on a twenty (!) mile longer route, with thousands of feet of elevation gain, as opposed to the much lower, easier, shorter route around the mountains. I didn't notice because no local would even consider the route Tessie chose, it is absurd to go that way (and, unlike Google maps, there doesn't seem to be any way to change the route on the Tesla nav system). Not too surprisingly, the same thing happened on the way home from Blanding: Tessie chose the twenty mile longer route over the mountains and it wasn't until I got to my turn to the correct route that the energy plot showed an additional 10% battery at my destination. Going the usual way around the mountains I started with 94% in Blanding and arrived at home with 14% (next time I will just charge to 90% in similar mild weather conditions). So, if others see the energy plot cycling between projections, perhaps Tessie is measuring alternate routes. I've never seen this happen on ordinary freeway road trips but mountains with varying route choices seem to cause issues. Thats fine for me on my home ground but it could be a problem for tourists driving the mountains. It would be crazy to go over the mountains rather than around them unless mountain sightseeing was the goal of the trip. But how would visitors know that unless they had preplanned their routes? Anyway, I throw this out there as a possible reason for energy plot glitches. FWIW.