All good questions.
However, if the EV has a range of say 100 miles, and most commutes or trips are 1o-20 or whatever, that leaves you with significant margin for accessories to be run.
The best answer would be to put your destination and planned route into the dashboard navigation system/GPS map etc. if recharging is available at the destination, or if round-trip would be needed, then have the car intelligently budget the battery level amongst propulsion and accessories.
On one hand EV's seem very limiting, OTOH, I CAN figure out a few ways to make electricity at home if I had to. (scrap metal windmill and a old gas-car alternator or something...) I can't exactly make gasoline myself, and even bio-diesel is dicey, and requires waste oil that if diesel use was common, I could probably not get.
Honestly, if we could just get one car of every two car family to be a pure EV, the savings would be huge, and then the second car for vacations, groceries, carrying the kids were an in-line hybrid, preferably high compression turbo-diesel, that would mean more savings.
But the market has to do it on it's own. Sham projects like the Chevy Volt will never get us there. (which I've learned might not even be an in-line hybrid, like a diesel sub, or locomotive, anymore. That it's dual-mode like the Prius and Insight, with the huge price-tag and .gov subsidy.
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