Oldhippy
Cynical idealist
I believe there was a city somewhere that announced that a certain day would be a leave your car at home day and take the bike/walk/public transport.
Alas a lot of commuters thought it would be a god day to commute by car as the roads would be free.
Result - grid lock - more than normal!
Doesn't surprise me at all. Local authorities should take a firmer stance and make it a thing but sadly as with so many easy fixes they don't have the political balls just in case they lose votes from the 'it's my right to pollute and clog the roads cos I can't be arsed to use my legs brigade'