The laboratory on wheels

What motor racing has actually contributed, and to whom

A Motor racing is frequently defended as a laboratory for the ordinary car, and the defence is partly true and largely misunderstood. What the sport has actually contributed is rarely a component that reappears unchanged in a road vehicle. It is a method: a development cycle measured in days rather than years, conducted under a regulatory framework that changes annually and against opponents who are doing the same thing, on a machine whose every parameter is instrumented. A modern car of this kind carries hundreds of sensors and returns data continuously to engineers who are analysing it during the session, which means a change can be proposed, modelled, manufactured and evaluated inside a week. Very few industries operate on that cycle, and those that do have usually learned it from somebody who did.

B The early transfers were nevertheless direct, because early racing cars were closer to road cars. Disc brakes, developed for aircraft, were proved at a twenty-four-hour endurance race in the 1950s and were on production saloons within a decade. The stressed-skin construction that replaced the tubular frame — the whole body forming a rigid shell rather than a covering hung on a chassis — moved from racing into mass production and is now universal. Both were adopted for road use because they were better and cheaper, which is the only mechanism by which such transfers ever occur.

C Aerodynamics is where the sport diverged from ordinary engineering and pursued something almost nobody else needed. The realisation that a wing could be inverted to press a car onto the road, rather than lift it, transformed cornering speeds; the subsequent discovery that the underside of the car could be shaped to generate far more downforce than any wing produced cars that could theoretically have driven on a ceiling. Almost none of this is useful on a road, where downforce at legal speeds is negligible and the drag penalty is not. What the pursuit did produce was expertise in computational fluid dynamics and in the design of wind tunnels, which is now sold to industries with no connection to racing at all. Teams have applied the same tools to the airflow around hospital beds, the efficiency of refrigeration in supermarkets and the drag of cycling equipment, and several run consultancies whose revenue is unrelated to racing.

D The most substantial recent contribution is one the public associates with the sport least. Regulations introduced in 2014 required teams to extract more work from a strictly limited quantity of fuel, which converted the competition into a contest in thermal efficiency. The engines that resulted convert more than half the energy in their fuel into motion, a figure no production engine approaches and which was widely considered unattainable, and they do so partly by recovering energy from exhaust heat that would otherwise be wasted. The principles are being applied to heavy transport and to marine engines, where efficiency matters more than it does in a car that spends its life below thirty miles an hour. It is a fair example of the general pattern: the racing regulation did not produce a component for road cars, it produced a demonstration that a level of efficiency widely believed impossible was achievable, and demonstrations of that kind travel further than parts.

E Safety is the area where the sport's own record is most transformed and where the transfer outward has been slowest. A generation of drivers died at a rate that would now be regarded as criminal; the response, developed over decades, included a survival cell that remains intact when everything around it is destroyed, a device restraining the head relative to the shoulders in a deceleration, and eventually a titanium structure above the cockpit that was resisted on aesthetic grounds and has since saved several lives. The engineering has informed the design of racing series worldwide, and rather less of what happens on public roads, where the constraints are cost and the physics of a much heavier vehicle.

F An unexpected transfer occurred in medicine. Surgeons from a children's hospital, dissatisfied with the number of errors occurring when a patient was moved from an operating theatre to intensive care, studied how a racing team changes four wheels and refuels in a few seconds. What they took was not equipment but choreography: a defined role for every person, a designated leader who does not touch anything, a silent protocol with a clear signal to begin and end, and a review of every handover afterwards. Error rates fell substantially, and the protocol has since been adopted well beyond the hospital where it began.

G The honest summary is that the sport is a poor way to develop road cars and an unusually good way to develop engineers and processes. Manufacturers know this, which is why they treat participation as recruitment and marketing as much as research, and why the technologies that do transfer tend to be organisational rather than mechanical. A team that must redesign a component overnight, test it the following morning and race it that weekend produces people who are unusually good at doing difficult things quickly, and it is those people, rather than their parts, who leave the sport and change other industries.