If you were racing here tomorrow you’d wear a Rolex. Sliding through a corner at 170 m.p.h. a Formula One Grand Prix car is travelling roughly 17 yards in a fifth of a second. So to say Grand Prix racing drivers have a highly developed sense of timing is something of an understatement. Their lives depend on it. Many of them wear a chronometer they call the best in the world. Its Oyster case is carved out of a solid block of 18 ct. gold or Swedish stainless steel. So much of the work is done by hand, each Rolex Oyster takes more than a year to make. Jackie Stewart thinks it is time well spent. The Rolex he wears is the Datejust.