Agreed; the largest advantage of electric car production is the comparative simplicity of the underlying "sled" (can't link directly, but you can see it if you go to http://www.teslamotors.com/models/features#/interior and scroll down to the section "safety"). After several iterations of that, producing cheap cars will be a no-brainer. I'd also expect rising differentiation between "car companies" and "electric car sled producers".