I drive a Tesla Model X, one of the least efficient cars in the Tesla lineup.
Until recently, I road tripped to AZ with it and escaped much of Montana's winter. This is my first winter in MT with it.
The car has required virtually no maintenance in the  44,413 miles I've logged with it. A set of tires and a quart of windshield fluid is about it. 
The car is absolutely the best winter vehicle I've owned and driven. If I remember to open the app on my phone and preheat the cabin, it's toasty when I get in. If I don't, the heater is blowing warm air almost instantly. There is no lag time like with a liquid cooled engine. The heat pump makes warm air in about the same time that it takes for an air conditioned car to blow cold air in the summer.
Low center of gravity and a bit of extra weight from the battery pack make it very sure footed on winter streets.
This town is loaded with roundabouts on the road that leads to downtown from our home. A roundabout every half mile on a 45 MPH Speed limit street really works the brakes over on my ICE SUV. The regen brakes slow the car and lack of transmission and shifts when exiting the roundabout make the whole deal about as seamless as one could ask.
I took my sweetie for breakfast, this morning. Here is a screen shot of energy used to make the trek to the restaurant and back.
Electricity costs me $0.1168 / KWH. No extra transmission charges, demand charges, or purchased power surcharges. Meter is a flat $27 /month regardless of usage. So, the 17.3 mile trip had a fuel cost of about 61 cents or 3.5 cents / mile.

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