Win on Sunday, Sell on Monday. Honda's voracious success on track and showroom in the late Sixties turned them into world no 1. However, in the Seventies race winners were two-strokes; Honda didn't do two-strokes and sales were flagging. Rather than race a two-stroke Honda designed an immensely complicated bike to beat the two-strokes, the infamous NR500, with oval pistons. Yoko Togashi worked with Honda and has written the first book on this ignominious failure, but more about the Honda engineers' fight to get back to winning again with Freddie Spencer and the Championship winning 1983 NS500.