The setting by NSU, in 1956, of a new Speed record at Bonneville, at 211.40 mph, seemed to rekindle Dearden's interest, for it was reported he would now fly the bike to the Salt Flats in his own Cessna aeroplane, for one last serious attempt. Yet again it came to nought when the CAA refused to certify the aircraft for this type of transportation. The Vincent thus stayed unused and neglected at Dearden's premises over the next decade until sold to a friend of his, Eric Biddle, in 1970. Biddle never used the machine, eventually selling it to Michael Manning, a scientist, who lived in Pennsylvania, USA. Manning took it to a Vincent Owners Club Rally in Canada, in 1977, where it was allegedly started but not ridden, and after returning to his home in Philadelphia it again remained in storage until acquired by the present owner, a Texan collector, in 1987.