in a surprise announcement in mid-1993 left a void that has since been filled with the highly successful Clipsal 500 for V8 Supercar racing, held on a modified version of the same street circuit. The Classic Adelaide, a rally of classic sporting vehicles, is also held in the city and its surrounds. Adelaide formerly had three horse racing venues. Victoria Park, Cheltenham Park Racecourse, both of which have now closed, and Morphettville Racecourse that remains the home of the South Australian Jockey Club. It also has Globe Derby Park for Harness racing that opened in 1969, and by 1973 had become Adelaide's premier harness racing venue taking over from the Wayville Showgrounds, as well as Greyhound Park for greyhound racing that opened in 1972. The World Solar Challenge race attracts teams from around the world, most of which are fielded by universities or corporations, although some are fielded by high schools. The race has a 20-years' history spanning nine races, with the inaugural event taking place in 1987. Adelaide hosted the 2012 World Bowls Championships at Lockleys Bowling Club, becoming the third city in the world to have held the championships twice, having previously hosted the event in 1996. Dirt track speedway is also popular in Adelaide with three operating speedways. Adelaide Motorsport Park, located adjacent to the Adelaide International Raceway road racing circuit at Virginia ( north of the city centre) has been in continuous operation since 1979 after the closure of the popular Rowley Park Speedway. Gillman Speedway located in the semi-industrial suburb of Gillman, has been in operation since 1998 and caters to Motorcycle speedway and Sidecars, while the Sidewinders Speedway located in Wingfield is also a motorcycle speedway dedicated to Under-16 riders and has been in operation since 1978. In 2016, backed by South Australia's Peregrine Group owners of OTR (On the run service stations and 24/7-hour convenient stores) opened up a multi-purpose facility; a state-of-the-art motorsporting park and a hotel alongside its newer OTR service station outside a small township of Tailem Bend currently named The Bend Motorsport Park. Design for thrill seekers and rev-heads the facility currently host South Australia's second V8 Supercars motoring event during a round in August and hopes to bring in other major international motoring events such as SBK Superbikes and other well established FIA motoring events. Adelaide is home to the Great Southern Slam, the world's largest roller derby