[strat61caster]

You'd have to be nuts to drive in those cities anyway. It's a token effort that will have almost zero environmental benefit in the grand scheme of things.

Cars will eventually move out of major cities due to congestion naturally as public transit and ride sharing improves. The only thing laws like this do is hurt a minority of gear heads (which will move out of the city if the laws affect them), stroke the egos of a few politicos, and drive ad-revenue to clickbait either praising or condemning the measure depending on what internet bubble you live in.

I don't condemn speeding up the process via governmental process, but singling out diesel is a half measure, might as well go all the way you pansies. Levy a congestion tax on all drivers like London does, tax all polluters equally whether you live in a city or not.