Is Formula One now America's fastest-growing sport?

Over 20 years ago, when the globe entered the twenty-first century, sports columnists dubbed NASCAR "America's fastest-growing sport."

That title should now probably be assigned to a different type of motorsport: Formula One.

Even a few years ago, the idea of F1 gaining momentum in the US would have been laughed at. The open-wheel racing series has long been connected with Europe, the Far East, Mexico, Canada,....