It does matter. The first computers took up an entire room. I believe it was like that for a few decades. They were ubber expensive, inefficient, uneffective and were not available to the general public. Technology got better and we have most households have at least one computer.
Eventually the same thing with happen with the electric car.
No it won't because the physics of each have nothing in common. Seeing as you don't understand that there's no point in discussing it.