 Complete the following phrase:  With McLarens introduction of the new M14A in 1970, the M7 had only one more works outing when Dan Gurney used an M7A at the 1970 British Grand Prix. Privateer John Surtees bought the M7C as a stopgap until his own Surtees TS7 car was ready. He raced it at four Grands Prix, retiring from three and finishing sixth in the Netherlands. The car then switched hands to Jo Bonnier who used it for two more races that year. The M7D was used intermittently with the M14D by Andrea de Adamich and Nanni Galli, qualifying for and starting only one race, the 