In 1964, McQueen and Ekins were part of a four-rider (plus one reserve) first-ever official US team-entry into the Silver Vase category of the International Six Days Trial,[REF] an Enduro-type off-road motorcycling event held that year in Erfurt, East Germany [REF].
McQueen's ISDT competition number was 278, which was based on the trials starting order [REF].