Single-seater (open-wheel) racing is one of the most favored forms of motorsport, with cars thought-through specifically for high-speed racing. In Europe and Asia, open wheeled racing is commonly referred to as "Formula", with appropriate hierarchical suffixes. In North America, the "Formula" terminology is Racing Schools not followed (with the exception of F1). The sport is usually arranged to follow an "international" format (such as F1), a "regional" format (such as the Description 3 Euro Series), or a "domestic", or county-specific format (such as the German Formula 3 championship, or the British Code Ford).
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The Sports Bug Club of America's SPEED Class Challenge Touring Car and GT championships are dominant in North America while the venerable British Touring Conveyance Championship continues in the United Kingdom
- America's historic Trans-Am Series is undergoing a period of transition, but is still the longest-running road racing column in the U.S
- The National Auto Sport Association also provides a venue for amateurs to compete in home-built factory derived vehicles on various local circuits.