We stayed close to a lone biker, tailgaiting him on the drive into Sturgis. His Harley floated around the long curves of shining blacktop, and up and down the slopes. The rocky pine-covered Black Hills were clear of clouds, the sky breaking open blue after an earlier rain. We were the only SUV in the long, long, procession of rumbling motorcycles, and we did not talk, transfixed by the constant, fast moving parade.