2013 marks the 30th anniversary of the BMW GS series of adventure bikes. BMW invented and continue to set the bar for this genre of motorcycle with their GS line. The do-it-all motorcycle has picked up in popularity in recent years partly due to the slow economy making people demand that their toys be more flexible on and off road which is what the GS is named after. The new 2013 model incorporates water cooling for the first time. Air still cools the cylinders through fins, but water is responsible for the valve seats in the heads. The big 2-cylinder boxer engine also incorporates an innovative Dual Overhead Cam (DOHC) system that debuted in the current generation of the bike in 2010. The cams are turned perpendicular to the usual layout for intake and exhaust manifold clearance. Each cam drives one intake and exhaust valve. Slightly conical cam lobes allows the straight cam to drive valves that sit at V-angle from each other. BMW released this video showing how the passions of the engineers and designers shaped the new 2013 R1200 GS.