What do you mean by impossible in this case? Can't you just have the coin-operated parking meters back? Where I live, in EU, parking meters even take cards.
EDIT: I guess "just" is doing some heavy-lifting, so I won't argue this further, but "impossible" isn't the word I would use either. The city could revert this decision, definitely if enough people wanted them to (that's... I know, the hardest part). I just agree with the OP that we technically could go back to slightly less-digital society.
EDIT: I guess "just" is doing some heavy-lifting, so I won't argue this further, but "impossible" isn't the word I would use either. The city could revert this decision, definitely if enough people wanted them to (that's... I know, the hardest part). I just agree with the OP that we technically could go back to slightly less-digital society.