Originally Posted by
gglave
Where do you live where it regularly gets to -40C? Yellowknife?
Even there it's an infrequent event.
In Toronto your average low in January is -7C.
(Only humans are impacted by windchill.)
It doesn't need to get to -40 before electric cars' range are seriously depleted - it can start happening as low as -5, in part because heating the interior uses a lot of energy.