From Soundlandscape’s blog:
In August 2014, an organisation called Paris sans Voitures, a citizen collective made up of scientists and high-profile individuals, residents of all ages, professionals, activists and dreamers, put forward a proposal to the Mayor of Paris, Anne Hidalgo, to reclaim Paris and liberate the streets. Their vision was for a car-free day; a day when private vehicles would be banned in Paris and public transport would be free.
Anne Hidalgo was impressed but the Paris police were more difficult to convince. Nevertheless, a decision was reached on 5th March this year that for one day Paris would experience ‘une journée sans voiture’ – a car free day.
The Mayor was not able to persuade the police that the car free zone should extend across the entire city so an accommodation was reached.