I doubt you’ll win the war against air conditioning. Increased efficiency might have an impact, but I doubt people who’ve had it will go back to not having it.

About cold weather, there are some innovations from Tesla and others, but still work to do!

https://www.google.com/amp/s/www.thesun.co.uk/motors/5179794/tesla-just-solved-the-problem-of-your-electric-car-battery-losing-range-in-cold-weather/amp/