Walk around:
Brake until your speed is 0 MPH. Press LS + RS, Up. Your character will dismount from the motorcycle, and can explore the scenery.

Change volume during FMV and menus:
Press LS to decrease and RS to increase the volume of the music.

Hint: Clowns:
On the Peninsula track in level three or higher are two businessmen with odd shaped clown faces, large blue shoes, and peculiar objects in hand. They can be found at the 6.5 - 6.6 mile point walking back and forth on the road. If you punch or hit them, their pants will fall to their ankles, and they will be left wearing only red and white boxer shorts

Hint: Cows:
Special cows are present on the Peninsula track on the other side of the right side guard rail near the clowns. If you punch or hit them, they will put up their hoofs to shield their eyes, while standing on two legs.

Hint: Dirt road:
Go right on the first fork in road of the Napa Valley track, located at the 1.9 mile point