Left home 9 AM this morning (5500 ft ASL). Car overnight in 65F parking garage. Drove ~30 miles to 8200 ft ASL. Parked outside (20-25F) for 6 hours.
Got in car to drive home and ZERO regen for all but the last mile or two when it was maybe a "1/16 of an inch of green" on the energy graph. Intermittently on the brakes the entire drive home.
The car is now virtually useless in winter when there's need for down hill speed moderation.
Tesla, you've degraded a lot of nice features in the past, such as the fine user interface after V8, but this one (no/limited regen for extended periods) is the absolute worst thing you've ever done!