Friday, 3 July 2009, 13:35 GMT

Valentino Rossi emerged victorious in a Superkart 'exhibition' race against three American former world champions as part of the Laguna Seca build-up yesterday.

The Italian took on Wayne Rainey, Eddie Lawson and Kenny Roberts Sr in a one-lap sprint around the United States Grand Prix venue in Superkarts.

Although the event was billed as a demonstration run, it culminated with Rossi 'winning' by a healthy margin.

"Honestly I was bit nervous about the Superkarts before because I know how fast these things are," said Rossi. "I sometimes drive one in Italy with friends, just for fun, but I know that Kenny, Eddie and Wayne like to race and they're quite serious!

"Also this isn't the easiest track. Anyway, it was great fun and I enjoyed myself a lot. The kart is quite incredible; the gearbox is very good and in the hard braking areas it's really impressive. It feels very fast and it's possible to have a lot of fun."