We will all be dead before America becomes a city planning utopia. Not because it can't, there's just so much work involved to reconfigure everything. I believe if you fixed your zoning though, it would eventually gravitate towards that on its own as people flee suburbia for the more livable cities. That doesn't mean don't vote for it though, even small improvements to one location can improve livability.

Maybe think of EVs as a stop-gap because if you want clean air for millions in the next 30 years that is our best option. Even the famous Shinkansen took longer than that to build, and they had the benefit of a miracle economy, cities already configured for density and mixed zoning, and a government that could actually achieve things on a horizon longer than 3 years.