I helped my daughter move furniture to a new apartment all morning, then hit the road for 4 hour drive home. I got really tired mid-afternoon, driving into the hot sun, so I stopped at a rest area to take a nap. I left the car "on", with the A/C blasting, while I took a power nap to recharge myself. I thought this was a really cool feature - to do this without burning gas or danger of CO fumes. And it blows lots of really cold air, which an idling ICE would not be able to do. I got home and charged overnight. I panicked to see EV range of only 48 miles, when I've been getting high 50's all summer. Then I remembered my nap. So the car based its range calculation on the fact that my car moved zero miles while in EV mode for 30-40 minutes. After a couple days, my EV range has crept back up to the mid-50's.