Naturalists in a London Park with Cycles, England, UK, A demonstration World Naked Bike Ride. One Less Car for ULEZ

The relaxed attitude to suitable bike riding attire this most compelling of spectator sports has a serious agenda: it's a protest against oil dependency and the way the cult of the car dominates contemporary life. It’s also an unfettered celebration of individuality of the human body. Many of the 1000 plus people expected to turn out will opt to bike in the buff. And if you too long to through caution and clothes to the wind, but feel a bit bashful, you can always take something along that’s easy to put on when the procession gets held up by traffic, as it inevitably will.