So planning trip and a little concerned. Model S 85D range mode on, 100% charge. From home to first Supercharger is like 210 miles. Mostly flat Midwest driving. Go speed limit say 60-65 MPH. 4 people in the car with light luggage. So about 700lbs. Looks like when we leave it will be 35-40 degrees and the where we will end will be about 50 degrees. Should we have any concern?