I think freight logistics is another topic though. (Last mile) Deliveries will likely stay on trucks and vans, simply because it isn't feasible to have tracks to everyone's house. Though increased usage of trains would probably still be cheaper and more efficient here.

My point of argument was related to personal travelling (getting to work, buying groceries, ...), as the comment I replied to discussed. Those are activities we could or should probably try to move onto rails or more generally public transport rather than trying to have the same number of cars but just electrified.

Though there might also be regional differences in feasibility. European cities tend to be much more built around public transport and walkable distances, making it much easier to adopt such measures than most of rest of the world (for various reasons).