I'm planning to do a trip over Tioga Pass in the Sierras, I have a Model S 85 with estimated battery range 257 mi when fully charged (but that's estimating flat highway, I suspect). Planning a trip over Hwy 120 through the Tioga pass, fully charging to 100% at Groveland Supercharger, then heading over Tioga Pass Hwy 120 to Mammoth Lakes Super Charger - a trip of 118mi up and down the mountain roads. Has anyone done this in a Model S that could give me an idea if this will work in an S 85, or if I should take my ICE vehicle?