I had V4.0 software an went to friends house. Arrived with 145 miles rated range. When leaving 16 hours later range had dropped to 102 miles rated range. Car was uncovered in the driveway overnight with cold temperatures and high winds. I have sleep mode enabled - so this is not the normal "vampire load" issue with the displays. It's just likely what the car needed to do to keep the batteries warm - both regen and power were limited in the morning. I'm all for Tesla maximizing care of the battery pack, however it is important to communicate expected behavior. I could have plugged in to a 120v outlet at my destination, but didn't since 145 miles range was plenty to get home (100 was just enough). Have others seen similar behavior? Will v4.1 be different?