A couple kiss on the Champs Elysees Avenue, Paris, during the "day without cars", with the Arc de Triomphe in the background, Sunday, Sept. 19, 2021. It is the seventh year the city has held a car free day in an attempt to reduce traffic and ease air pollution. AP Photo/Lewis Joly Socialist Mayor Anne Hidalgo announced Paris' first "day without cars" in 2015. Events included a rollerskating marathon, bicycle fair, and techno parade. Hidalgo is working on a plan to drastically reduce car traffic in the heart of Paris next year, France 24 reported. See more stories on Insider's business page. On Sunday, Paris turned over its streets to pedestrians so that citizens and visitors could enjoy its seventh annual "day without cars."Announced by socialist mayor Anne Hidalgo in 2015, the city received enthusiastic support from both ordinary Parisians and unlikely parties including the head of a French drivers' association, USA Today reported.