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Heat pumps can't take the cold? Nordics debunk the myth
(techxplore.com)
This is a most excellent place for technology news and articles.
A 1kw heater (less, given they're all heat pumps these days) isn't doing squat to the range compared to an 80kw motor.
A gas car has to idle its engine to get heat. It's burning fuel constantly.. that's why you frequently see broken down gas cars in heavy traffic.