At dealership. Concerned with how fast range depleted. I'm at a dealership and considering purchasing a used 2013 Leaf. It's 97 degrees in Atlanta, so we drove with AC on. At full charge, it said 81 miles at start.  Before we left, we turned AC off just to see indicated range would change, and it changed to 88. What's really concerning me is after driving just 2 miles it dropped all the way to 70. Is that normal? And if we were to keep going, would it continue to drop that fast? My commute is 31 miles, and I am able to charge at work, at least 110v. Any help would be greatly appreciated. 