Dune Buggy Game At School I Can't Think Of The Name Of This PS3 Game. Motorcycle...?

I can't think of the name of this PS3 game. Motorcycle...? - dune buggy game at school

Well, my father got my PS3 at home. I'm in school and want to play this game you play forever. I thought it was a small part of the MX-series, but I can not find him.

I know he can ride a motorcycle, a jeep, a truck or a motorcycle very low. You ski for free and find, collect and radios. Some are gold, some are brown, and you must jump to reach most of the time. It's so fun! She rages, because I just bought and I am so sad that I did. HELP!