Stig drives the Jaguar Project 7

When styling Jaguars in the Fifties, designer Malcolm Sayer stuck tufts of lambswool to a car's bodywork and then drove along and observed how the wool was shaped by the airflow over the surface. One of his machines was the D-type, and, through his sheepy science, he determined it should have an aerodynamic fin behind the driver's head. This would steer air over the car, keeping it tidy as it slipped off the tail, and might also help drivers hold things steady at 274kph along the Mulsanne Straight at Le Mans. It worked. Some even took their hands off the wheel.

Fast-forward 60 years, and TopGear is conducting a similarly primitive aero test. We also have a Jaguar. It, too, has a fin. Except ours isn't decorated with fleece - and the driver's seat is loaded with a Stig. He's just performed a lavish burnout and now the electric blue Project 7 - a modern tribute to the D-type - sits in a cloud of its own smoke. The exhausts summon a primal roar, and The Stig's off, bursting through the artificial mist, vapour streaming over the bodywork in delicate white lines. It follows every contour and curls off the rear wing in little wisps. If old Malcolm were here now, he'd be taking notes. Who needs wool and sticky tape when you have a Stig and fresh tyres?