Buying any car, electric or otherwise, is 'Sort of like building a horse barn in 1910’.
Let's say that it depend on where you live. In a big city maybe a car can be useless (or less usefull), but in a small town like mine a car is basically the only way to move around since public transportation is really limited.
Real sustainability comes from changing the zoning code to cease outlawing walkability.
Even if you remove all the private cars in a city, you will discover that you will substitute almost all of them with small/medium trucks to deliver all the groceries/products you (end everyone else) need in your life. And I say it living in a small town where I can almost do the day by day chores without using a car.