IMO a gas tax rate that is on par with the rest of the developed world would be the most sane way to combat this. Gas taxes in the US and Canada are dismal compared to many other countries (https://afdc.energy.gov/data/widgets/10327).
And of course more investment in pedestrian/biking infrastructure and more walkable city planning.
And of course more investment in pedestrian/biking infrastructure and more walkable city planning.