WHEN DID IT IMPLODE? Jul 15, 2010 10:56:33 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by oldskidkid on Jul 15, 2010 10:56:33 GMT There was some consdierable activity still in the mid-1960s for cycle speedway. When did the sport implode and most of the teams vanish?