Don Nicholson was an American drag racer from Missouri. He raced in the 1960s and 1970s when there were few national events. The National Hot Rod Association (NHRA) estimates he won 90 percent of his match races. As of 2002, he held the record for the most number of categories in which he reached a final round : Funny Car, Pro Stock, Super Stock, Competition Eliminator, Stock, and Street. He was nicknamed "Dyno Don" after he was one of the first drivers to use a chassis dynamometer on his cars in the late 1950s, a skill that he learned while working as a line mechanic at a Chevrolet car dealer.