Living in Norway, electric cars have seen a boost in sales the last years yes. The problem is in the vinter when we often see temperatures of under 15 degrees celsius, making a "non heat producing" EV rather cold. Some are outfitted with gas burners to counter the problem, but it's just a temporary fix as the batteries don't handle the cold climate too well.
I'd never buy one though. Crashing with one of these cars, weighing in at around 5-600 kg, against normal cars in the 1200-1600 range - is certain death. The tax-free situation (making a EV-purchase defendable) is, if I know my own government, prone to change at any time. Tbh, a hybrid polluting under 100g Co2/km is a better purchase - and should have had equal tax-reliefs as the fully electric cars. Looking at life cycle emissions, "green" cars aren't spectacularly green.
That being said, I'd never buy a Volt.