A while back I wrote about how quickly things change in MotoGP, while at the same time remaining the same. Today I wanted to talk about how tough the racing business is. In the US, most people follow ball-and-stick sports, though there are some ardent fanatics of NASCAR. The business of racing a vehicle, whether on a track or dirt, is an expensive proposition. This is one of the reasons you often see racing drivers/riders covered up with sponsor decals and long family racing dynasties. Any sponsor is...