We are also the best at darts (with the Dutch a close second) it doesn't make it a sport. Not in the truest sense of the word, where men and women use not only great tactical thinking but also great physical strength and endurance to become the greatest.
So motor racing requires no tactical thinking, physical stength or endurance?
Have you ever heard of a race called '24 Heure Du Le Mans'? No? How about the Mille Miglia, where in 1955 Sterling Moss drove a heavy car with drum brakes and no power steering flat out for a thousand miles on broken Italian public roads, over mountain ranges, and through narrow town streets without even stopping for a piss? It took over ten hours of intense concentration and huge physical effort, it was over 30 degrees outside of the car and his average speed was 99.5mph. He was also driving against the greatest drivers at the time so no cake walk.
You can hardly compare it to a bunch of fat blokes with mullets throwing darts at the walls of northern working mens clubs between necking pints can you?