Here is the full list of all 22 Cars: Race-O-Rama trophies - there are 14 silver, 7 gold and 1 platinum.
Earn every trophy.
All Sparkplugs collected from all races.
Win every Guido Kart event.
Win every circuit race event.
Win every Point to Point Race event.
Complete every Photo Op.
Win every Mini Game event.
Win every Sheriff's Pursuit event.
Win every Transporter event.
Win every Autocross event.
Beat Chick Hicks for the Title.
Score 25000 points in the Materdor event.
Beat Stinger.
Win every Academy Challenge.
Score 25000 points in the Tokyo Mater event.
Beat El Machismo.
Beat Candice.
Score 4500 points with a single drift.
Score 5500 points in the Mater the Greater event.
Win every Tractor Stampede event.
Win every Tire Find event.
Score 4000 points in the Mack Track Challenge event.