I'm American, like F1 and NASCAR but rarely spend time watching either (or any other television). I also prefer to drive on a winding country road in a European touring sedan versus more boring routes. I played soccer (shouldn't he have said football?) when I was younger and I'm fine with the metric system (the real question is why they taught it in elementary schools starting in the '70s, but didn't bother switching…
at the end of the day, one-directional media consumption (almost anywhere) is driven by maximising ad dollar expenditure. we just need for the Formula One Group to make the same sales effort in the US as they've done in asia. since the sales push in asia (during the past 3 years) a whole bunch of new asian sponsors/cars/drivers have joined F1. i guess it's a matter of time.