[Slideshow] No cars but a lot of rain on Paris' Car-free Day

The few cars allowed on Paris' Car-free Day are stuck by the Seine, while the rain keeps cyclists away.

The few cars allowed on Paris' Car-free Day stuck by the Seine near Notre-Dame cathedral.

Distressed security personnel, outnumbered by furious motorists, try to keep cars from entering Central Paris. Nevertheless, a few cars forced the security perimeter.

The Pont Neuf bridge in Central Paris, normally bustling with cars and buses, stands forlorn on a rainy Car-free Day.

Sheltered from the rain, a cyclo-car breezes past the Louvre.

French police guard the entrance to the Champs-Elysées.

No cars but plenty of rain at the Place de la Concorde.

The obelisk at Paris' Place de la Concorde, seen from the Champs-Elysées avenue.

A rare view of Paris' famous Champs Elysées Avenue.

'Quartier libre - Free neighbourhood' - the Strasbourg Saint-Denis area in Paris holds the city's first citizen's fair on Car-free Day.

"Change our cities, not our climate", reads a banner at Paris' Free Neighbourhood (Quartier Libre), in the Northern Strasbourg Saint-Denis area.