How exactly is buying a tool or grocery shopping (what I assume is meant by "the store") driving out of boredom?
But to your point, a tax on driving ICE vehicles may indeed incentivize different behavior in areas where there are other transit options. Proposing such a tax is a very urban-centric view, however. Anyone in an even somewhat rural area would immediately realize how impractical it is. For example, if I personally wanted to use public transit I would first need to walk 5 miles each way along a 50mph road without sidewalks to get to the nearest bus stop.
Of course increased public transit options are a piece of the puzzle here, but there are huge areas of the US that have a population density far too low for any type of public transit system to make sense. These areas also tend to the be the areas where buying an electric car is far out of reach economically as well. Like it or not, ICE cars aren't going anywhere for a while.