Hah! Cars have been around for just a hundred years or so, and yet serious efforts to reduce our dependency on them are
"near impossible." Talk about recency bias.
You have to remember that the infrastructure they depend on to have drinkable water, stores with food on shelves, power and other media, itself is built around cars and trucks, and depends on them being available and able to drive everywhere. Cars are intertwined with everything else in modern civilization - you can't just rip them out. Even if everyone other than critical infrastructure operators suddenly got rid of their cars, this still wouldn't let you eliminate roads from the city, as the trucks and construction equipment and ambulances etc. need to be able to go everywhere.