The Paris-Dakar Rally is one of the truly great motorsport events, known around the world the winning vehicles often go on to achieve legendary status and large sales success. The epitome of that notion is the BMW GS series which launched in 1980 and would go on to win the Rally four times in five years. By 2009 that winning formula had resulted in the sale of more than half a million road going versions and the legend of the GS lives on today. But with the Wheels & Waves Festival kicking off today in Biarritz on the French Atlantic coast, ...