Edited sentence: Largely because of this F1 focus, sim racing tends to be overwhelmingly non-American, which is a reflection of the American interest in NASCAR and uniform technical rules instead of the F1 way that highlights intricate and challenging road tracks and each team responsible for building their own car.One particular feature of sim racing is its emphasis on Formula 1, as opposed to other open-wheel racing series, sports and rally cars, and most of all NASCAR.There are not too many Japanese or East Asians seen either, although their market is ever increasing for Formula 1.There are numerous teams and drivers in sim racing leagues from the United States and Canada, but in general participation usually comes from Mexico, South America, Europe and Australia