It's actually a lot more difficult to quantify the total emissions of electric car than it might seem at first glance. For one, the electricity might easily be generated through carbon so this doesn't offset emissions as much as direct use of fossil fuels.

Not only that, but focusing just on emissions is not comprehensive enough when thinking about the environmental impact of these technologies as a whole. As an example, the extraction of lithium in south america is decimating extremely delicate ecosystems (such as ancient archeon that resides in these extreme environments).

So I do wonder if trying to offer an similar but not quite alternative to car transportation is actually doing as much good as we think, it might be better for governments to push for more collective solutions to transportation that will drastically reduce environmental impact as a whole. Not that electric cars are not better than petrol or gasoline cars, but still, I think as a whole the car industry (this includes electric) is probably a net negative to environment and electric cars in particular are prolonging the life of technology that we should be thinking of reducing as much as possible.