I'd rather have automated buses, trains and trams....and have them subsidised to get the prices down.
Or failing that, more HOV lanes. Seriously...most of the vehicles clogging up our roads have only a single occupant. That needs to be discouraged, and hitting people in the wallet is the quickest way to get a response. Car sharing schemes don't work because people are lazy and/or selfish. I tried offering rides on Blablacar and the sheer lack of interest compared to the likes of Germany is astounding.
You may declare it's your right to own a car. Which it is. But it shouldn't be an assumed right to drive it on public highways without assuming some of the (environmental/financial/congestion/aesthetic) cost that it inflicts on everybody else.