Obsession: Mark Johnston’s 11th BMW is this R100RT cafe

When your garage is packed with eleven BMW motorcycles spanning seven decades—and you have no car—it's safe to say that your hobby has morphed into an obsession. So what do you do when simply collecting bikes isn't enough? That's easy: you start customizing them. Meet Mark Johnston—a trained mechanical engineer who now works as a computer security specialist in Cape Town, South Africa. And this Mark's first custom project: one of the most meticulous airhead builds we’ve ever seen. Mark's garage includes a 1952 R67/2, a kitted R80G/S and even an HP2, but it was his 1980 R100RT that went...