But how many recing events of such a scale are there on a given weekend? In addition I do not think at all that the importance of motorsport in the US is any indication for its global importance.
Its not that but that there are more proffesional races held every weekend than any other sport. I bet its the same in England and Austraillia. You have to remeber there are very few amatuer races held here as oppsed to proffesional ones. Racing costs big bucks. There are hundreds if not thousands of proffesional races held n the US alnoe not only on weekends but during the week.

In Germany the number of motorsport events certainly isn't staggering while the number of soccer matches definitely is.
I dount your a racing fan and I think you would be amazed at how many races are run in Germany every weekend. I doubt you have anywhere near the number we do however as we have race tracks everywhere.