Why do they call them “stock” cars? I mean the cars used in the races popular in the US such as NASCAR, where they look like ordinary street cars.
What does the “stock” in “stock car” mean? I once had the mistaken impression that stock car races involved cars taken straight from the dealer’s showroom floor. But I just had a close-up look at a NASCAR car recently, and it was anything but “stock”. The most striking difference that I was was the interior - all the upholstry was removed, the dashboard was completely customized, and there was a roll cage. I don’t think there was even a proper door. I also understand that the engine is radically different from an ordinary street vehicle.
So what gives? Are the stock car racing organizations duping us? Or does the word “stock” mean something totally different in this context?