Many have tried, all have failed. Safety regulation encourages the design of all-fits-one vehicles. Consumers prefer to pay the premium for a 'proper' car over a simpler vehicle. It is what it is, for now.
I don’t disagree if you only think about cars, but I’ve seen a lot of smaller electric vehicles gain popularity very quickly. Things like escooters and electric bicycles. For some people these work really well for commuting.