Sonic has also been used as a symbol for Sega's various sponsorships. Between 1993 and 1997, Sega sponsored the JEF United Ichihara Chiba football team, during which period Sonic appeared in the team's uniform. During the 1993 Formula One championship, Sega sponsored the Williams Grand Prix team, which won the Constructors' Championship that year, as well as the team's lead driver, Alain Prost, winning the Drivers' Championship. Sonic was featured in the cars, helmets, and their rivals McLaren used to paint a squashed hedgehog after winning races over Williams. The 1993 European Grand Prix featured a Sonic balloon and Sonic billboards. In 1992, according to Sega of America marketing director Al Nilsen, Sonic was found to be more recognizable than Mickey Mouse in the six-to eleven-year-old demographic, based on the character's respective Q Scores, although this claim could not be confirmed by Q Score developer Marketing Evaluations, Inc.