I am wondering if anyone has driven their Model S from the foothills of San Bernardino to Lake Arrowhead or Big Bear. If so, what type of indications for range did the vehicle provide prior to the climb and after the climb to elevation? In other words, for a climbing drive of approximately 15 miles (from Sea Level to 6000'), how much "range" did the car actually use? Any real world numbers or formulas would be appreciated. Thank you!