So true and I do see your point. However I think it best to reduce the total car fleet, whether EV or not. In South Auckland there are lots of housing estates being built dependent on cars. If only they were built around a tram/train network and close to commercial centres where the residents could work without having to commute across the city.
As it is we are still encouraging private car use and demanding new multi-lame roads to cater for their use.