Unlockable Trucks
     These  are  all  of  the  trucks that you can unlock in the game. 
There  is  one truck that is missing, you must play multiplayer with a 
full group of people.

Avenger:            Earn 4,000,000 Moster Point

Backwards Bob:      Win the Speedster Series

Black Stallion:     Max out your Obstacle Usage during a Freestyle session

Blue Thunder:       Earn 1,000,000 Moster Point

Bounty Hunter:      Earn 2,000,000 Moster Point

Bulldozer:          Earn 2,750,000 Moster Point

Captain's Curse:    Fly over 160 meters in Monster Jump

Destroyer:          Earn 1,500,000 Moster Point

Devistator:         Win the Smasher Series

El Toro Loco:       Gain 5 Monster Spectacle Points while racing 
                    in London Rails

Grave Digger 
(Original):         Win the World Series

Iron Outlaw:        Win Mall Madness in less then 2 minutes and 30 seconds

Jurassic Attack:    Knock a wheel off while racing

King Krunch:        Earn 3,500,000 Moster Point

Monster Mutt 
Dalmation:          Score 30,000+ Skill Jump Points

Spike Unleashed:    Earn 4,500,000 Moster Point

Spitfire:           Perform a double mid-air combo

SUZUKI:             Win Sam Boyd Stadium Racing 
                    in less then 10 seconds

U.S. Airforce 
Afterburner:        Win the Stuntman Series

War Wizard:         Lead every lap of an Eliminator Race