The basic idea is enough range for 2 4h segments on highways, going uphill into the cold mountains & and the heater on with a break in the middle for lunch and

The basic idea is enough range for 2 4h segments on highways, going uphill into the cold mountains & and the heater on with a break in the middle for lunch and charging. The rating is 400 miles, but those 4 things will drop it a good chunk.