Gymkhana also known as automobil-slalomraces or autocross, is a form of motorsports that emphasizes safe competition and active participation. An autocross is a timed competition where drivers navigate one at a time through a temporary course marked by traffic cones. Autocross tends to place more emphasis on car handling and driver skill than on sheer horsepower, and events typically have many classes which allow almost any vehicle, from economy sedans to purpose-built vehicles, to compete. Speeds are a bit slower in absolute terms when compared to other forms of motorsports, usually not exceeding highway speeds, but the activity level (measured in discrete turns per minute) can be higher than even Formula One due to the large number of elements packed into each course. Autocross courses are typically 1500 to 2000 meters in length. In addition to being a national-level motorsport in its own right, autocrossing is a good way to learn skills that transfer to road racing, as drivers learn vehicle control. Autocross events are usually held in large paved areas like parking lots or airfields. Typically, new courses are created for each event so drivers must learn a new course each time they compete. Prior to driving, a competitor will walk the course, taking mental notes, and developing a strategy to be refined upon subsequent runs.

Marcus was able to win many slalom events and was the runner-up at overall standing at automobile-slalom championship for rookies 1995