 Complete the following phrase:  History shows that this never happened as plans were by then already in motion for McLaren to use the Peugeot A6 V10 in . In late 1993, Senna had already signed for Williams for the 1994 season; 20 years later, Dennis revealed that Senna would have remained with McLaren had McLaren signed Peugeot earlier as he believed a works partnership to be essential to success in F1, but felt obligated to stay with Williams. At the time, it was speculated that Senna believed that despite Peugeots recent success with its 3.5 litre V10 in endurance sports car racing, having won Le Mans in 