John,
I have sincere abhorrence to word entertainment in any sport that athletes compete against one another to see who prepared the the best, who is in better shape, more skill, more inventive, able to come thru the hardships of their sport, come thru in the clutch, the ability to define themselves in pressure packed moments. Life is not entertainment. It might entaining in some instances but not entertainment. To say its entertainment is a disservice to the to people competing. They compete. If its entertainment lets choregraph it, direct it, and then we can know the outcome. Let's be like the WWE now that is entertainment. They are actors.
Baseball, Basketball, Football, Hockey, Golf, Bowling, Skiing, Motocrosws, Formula 1, the Daytona 500, Tennis, these are competitions between people who believe they have the abilities to be the champions of their sport. If its entertainment who gives damn who wins so long as you keep me there in my seat or watching on the tube. If Pro drag racing is a show then we should be getting a lot more for our money.