During my two-day whistlestop tour of various galleries and arts venues across Glasgow, I’m afraid I didn’t spot one white bike. There are, apparently, 50 of them that punters are free to use for the two-week duration of the city’s second biennial International Festival of Visual Art. It’s a scheme that pays homage to the original Witte Fietsenplan (White Bike Plan) by radical Sixties Dutch movement Provos. Set up as a statement against consumerism, pollution and congestion, the action was predictably short-lived: most of the bikes were either stolen or trashed.