 March was more successful in selling large numbers of customer cars in the lower formulae . Mosley organised extensive test sessions for the 1971 cars for journalists and drivers , and arranged a successful scheme for drivers to rent cars and engines for the season , rather than buying them outright . <unk> money on a deal to supply <unk> <unk> , then motorsport manager at Ford , with a Formula Two car paid off when <unk> moved to BMW and offered March an exclusive deal in 1972 to use BMW 's Formula Two engine . March cars powered by BMW engines won five of the next 11 European Formula Two championships . However , BMW also put pressure on Herd to concentrate on the Formula Two programme . As a result , he spent less time with the Formula One team , where Mosley started to act as a race engineer . 
