The government could really get the ball rolling by incentivizing a switch further by by adding more stick along with the current carrots, adding a carbon tax to make ICE vehicles less appealing, but that is likely to be unbelievably contentious as it is in Canada.
The bigger gains have always been a more fundamental transformation of the transportation system from car oriented to a multi-modal system of moving people around via walking/cycling/bus/train.
The article suggests that this is expensive but I don't really think it is. Cycling infrastructure is unbelievably cheap compared to everything else, and walking is made more viable at the stroke of a pen simply by changing the zoning and building code to actually allow people to build walkable neighbourhoods with retail amenities, which unbelievably remain outright banned in so many places.