Most -- probably all -- motorsports fans are also car fanatics, but I have several friends who love cars but just aren't into racing. They find it boring to watch on TV, tedious, or simply not worth their time ("all the heart-pounding excitement of golf combined with the repetition of tennis," as one buddy put it). I think, perhaps, I should send them this article from Wired's "Autopia" blog, which shows the world's 10 greatest racetracks as seen from space. When you see the tracks from this perspective, the level of daring, skill and technical proficiency required to blast around these tracks at insane speeds for hours at a time becomes quite apparent.
My favorite, pictured above, is Germany's iconic Nurburgring, but to each his own. The list also includes Indianapolis Motor Speedway, Circuit de Monaco (driving through which Nelson Piquet compared to flying a helicopter in your living room), Ohio's Eldora Speedway, Circuit de Spa Francorchamps in Belgium, Philip Island Grand Prix Circuit, Utah's famous Bonneville Speedway salt flats, Daytona International, Circuit de la Sarthe in Le Mans and Las Vegas Motor Speedway.
For the full lineup of images, I'll refer you to Wired's original article, with write-ups for each, here.