HerdIn 2003, the first white painted bicycle shrine appeared on the streets of St Louis, Missouri, to commemorate a fallen rider. Soon, cities in other US states had their own versions; but today, we see these shrines in more than 80 cities around the world. Like the "cellotaphs" the rash of floral tributes that mark the site of road accidents in the UK with cheap flowers and sentimental prose this phenomenon seems to have come from nowhere and yet