Can you imagine a motorcycle universe without the Adventure Bike? But before the 1980 BMW R 80 G/S (Gelände/Strasse) there really wasn't such a thing. Now ADVs have spawned an entire culture of two-wheel adventuring. Technical Editor Kevin Cameron and Editor-in-Chief Mark Hoyer talk about the origins of the BMW GS and its evolution to the new R 1300 GS. Join us on our hour-long adventure!