Cappellini began his motorsport career not in a boat, but on four wheels, racing in karts. In 1981 he won the 135cc Italian Championship, and repeated the feat in 1982, alongside victory in the 135cc European Championship as well. During 1982, Cappellini was given the chance to try out a
Dallara-
Toyota Formula 3 car and took pole position in his first race, showing real promise. However, in 1983 he made the switch to boats, and in the 100 Miglia del Lario that year, he took victory in the S850 class. Cappellini also triumphed in the F3 Inshore category at the Six Hours of Paris in 1983, and in 1985 he finished fifth overall in the F3 Inshore World Championship.
FONDA Formula Grand Prix Making his debut in the Formula Grand Prix series in 1986, Cappellini started off driving a Mercury-engined Molinari hull, and during the year enjoyed a best result of two fourth-place finishes in
Hanover and
Singapore. Whilst Formula 1 disappeared as a world championship and moved entirely to the United States, Cappellini continued to compete at the top level in Europe with DAC Racing, the factory team of the DAC hull manufacturing business. In 1987, a third place in
Miami brought Guido his first ever podium and in 1988 he scored three second-place finishes at
Augusta,
Dublin and
Singapore, ultimately finishing the year fourth overall in the final standings. 1989 would bring Cappellini his first race victory in the series, in Italy, at the race in
Como.
Formula 1 Further victories would follow for the Italian in 1990 at
Budapest as the Formula Grand Prix series was renamed the Formula 1 World Championship, and in 1991 at
Penang. Guido was narrowly beaten to the title in 1992 with a much-improved boat, as fellow Italian Fabrizio Bocca pipped him to the championship. For Cappellini though, things could only improve. From 1993 to 1996 he took four straight F1 drivers' titles, a record that has yet to be matched. Another title would follow in 1999, before Guido once again asserted his dominance over the sport, winning another three championships in a row from 2001 to 2003. During this time Cappellini's main rival was
Scott Gilman, and over the following seasons the two would share in the success, with Gillman winning in 2004, Cappellini taking his ninth title, and 50th career victory, in 2005, and then Gillman winning once again in 2006. From this point Cappellini's form began to decline somewhat within the sport, as other drivers came to the fore, such as
Sami Seliö and
Jay Price. But, determined to secure an unprecedented tenth world title, Cappellini persisted, and secured it in style with an excellent run of form in the second half of the
2009 season, overcoming Seliö, Price, Thani Al Qamzi and early frontrunner Jonas Andersson. ==Racing record==