It makes little difference. Even if electric cars were 4 more energy efficient than ICE cars (and considering their construction cost, they probably aren’t), that’s still nowhere near enough. They’re still cars.
We could drop transportation energy use by at least 20 times if most of it was trains or trams.
But if they are charged on green power, and in many countries now they are especially over night, then they are vastly better than ICE vehicles. The goal with electrical vehicles isn't right now they are obviously greener (they are) but the true potential only comes when the supply is green power too which is happening at an accelerating rate.
Plenty of those EV's will have been charged at home on Solar, people tend to do both.
We could drop transportation energy use by at least 20 times if most of it was trains or trams.