Guardian: Minibus taxis are our biggest problem. They are dangerous. They just dont care, says Lovemore as he joins us on a dusty corner in Johannesburgs Diepsloot township. We are waiting for a group of cyclists to form near the minibus queue, which in the half-light of 6am already stretches around the block. Lovemore consults his smartphone. Around 100 cyclists living in this informal area of makeshift shacks and dirt roads on the edge of South Africas biggest city use WhatsApp to coordinate their journeys...