Rossi switches to four wheels

MotoGP World Championship leader Valentino Rossi made an early foray onto the Laguna Seca tarmac today, taking part in a Superkart exhibition alongside fellow Yamaha legends Kenny Roberts, Eddie Lawson and Wayne Rainey. The foursome made four laps in Superkarts powered by a specially-prepared Yamaha TZ 250 engines, which lap the 3.601km California circuit just a couple of seconds slower than the MotoGP bikes.

The Italian and the three Americans hold an impressive 18 Grand Prix World Championship titles between them, including three each for Yamaha.