“The safety car is another peculiar example of electric circuitry afflicting a mechanical object, that is, the consequences of the car are now being felt by the designers of the car whereas formerly they merely concerned themselves with the projectile. You hurled it out into the public and let the chips fall where they may. But suddenly in the age of circuitry the feedback is coming into the design. Product design now takes on the character of audience participation.”

— Marshall McLuhan