Started more than a decade ago as a small get-together for enthusiasts at a Santa Barbara BMW retailer, Bimmerfest celebrated its eleventh anniversary at a much larger venue this weekend: the Rose Bowl in Pasadena. The largest BMW gathering in North America draws participants from all over the country thanks to a very active online membership in its Bimmerfest forums. As has traditionally been the case, most attendees meet up early in the morning to caravan hours to the Southern California event.