sentences:  In 2001, he placed second in the German Formula Ford Championship, and finished 11th at the Formula Ford Festival at Brands Hatch.He then moved to the Formula BMW ADAC series, finishing 9th in the championship in 2002 and 10th in 2003.In 2004, Wirth moved to the United States, winning the inaugural Formula BMW USA championship with 4 wins and 11 podiums.