Autocross (also known as Solo2 by the Sports Car Club of America and AutoSolo in the UK [1]) is a popular form of motorsports competition. Rather than racing wheel-to-wheel, as in road racing, drag racing, or oval racing, an autocross is a timed handling competition similar to rally racing, although on smaller facilities. National organizations such as the Sports Car Club of America ("SCCA") and National Autosports Association sponsor autocross events throughout the United States, and many areas have independent autocross clubs. Similar autocross and sports car clubs and events can be found worldwide. Automobile manufacturers and their associated clubs (e.g. the BMW Car Club of America) sometimes hold marque autocross events.

Autocrosses are usually held on parking lots or similar large paved areas (such as airfields) with the temporary course marked by traffic cones. Typically, new courses are created for each event so drivers must learn a new course each time they compete. Prior to driving the course, a competitor will walk the course, taking mental notes, and develop a strategy that will be refined on each subsequent attempt at driving it. Speeds generally are slower in absolute terms when compared to other forms of motorsport, rarely exceeding highway speeds, but the activity level (in driver inputs per second) can actually be higher than even Formula One due to the large number elements packed into such small courses...