Uh... self driving electric cars actually change 2/3 of the problem. In a couple of iterations it will be orders of magnitudes safer than drivers, to the point where you'll be able to get home drunk in your own car. Also orders of magnitude less pollution where humans live.

Last 1/3 is simple car size, aka congestion. Ironically, this will probably be solved by the Boring Company and teslas.

I'm a huge proponent of bike lanes + e-vehicles. But let's be serious, Teslas really are changing the game. Well, or will, once the price goes down in 10 years.