These days, communications between F1 drivers and their pitcrews are detailed and convoluted to the point of being unintelligible to anyone else. Which is the point, of course. Before the advent of verbal exchanges by radio, pitboards were the only means of keeping drivers informed. This one, propped against the Tyrrell pitwall at Hockenheim, caught my eye not long after the 1987 German Grand Prix had finished. ‘STAY’. What on earth did that mean?