Jill and I went for our first long trip in our 2021 Model S LR yesterday. The trip covered 325 miles of roads with speed limits mostly between 55 and 70 mph. Close to half of that was on 70 mph highways. The car was set to Chill Mode and I have never been stopped for driving at the speeds we traveled. The temperature outside hovered around 35 degrees Fahrenheit and we kept the inside of the car at 68 F. My calculations show that we got 258 miles with 100% of a full charge (325 miles with 126%)! No where near the 405 miles of range advertised. And that doesn't even account for leaving enough charge to be able to safely reach a charger. Yes, we were traveling mostly at high speeds but we had hoped that these conditions wouldn't result in a 36% drop from the 405 miles advertised even with the cold weather. And I would have hoped that the estimated range would leave a safe reservoir to get to a charger. Much of the distance was spent on cruise control, so no heavy foot on the gas and light winds. Please explain.