Enter these cheats at the main menu screen:

Slow Game Speed:

Press L1, L2, R1, R2, Square, Circle.

Fast Game Speed:

Press L1, L2, R1, R2, Square, Square.

Normal Game Speed:

Press L1, L2, R1, R2, Circle, Circle.

Note: If you enter these codes correctly, there will be a sound and a screen will pop up, telling which code you did right

Who Wants $25,000:

Press L2, Square, R1, Square, R1, L1, Circle, L2, Square, R2, Square, R1 to get $25,000 in career mode.

Unlock All Trucks:

At the main menu Press L1, L2, R1, R2, L1, R2. to unlock all trucks.

All Trucks:

Press L1, L2, R1, R2, L1, R1 to unlock all 18 trucks and custom colors. To see the new trucks, go to the time attack menu, and when selecting your vehicle look at the Class 3 Fords. You will see a lot of Ford Explorer Sport Trucks that are custom painted and tuned up. These trucks are not available in career mode.

Hints

Mo Money:

Try driving around on different courses in the time attack mode using one of your career trucks. Hidden in some of the areas are wooden boxes that look like small foot lockers. Inside the boxes you will find money. So far I've only found one box in Artic Wasteland. You have to go way off course to the fenced in area where the snow movers are parked. Behind the building against the wall is a box containing about 500 dollars.

Mo Money Pt. 2:

On the treasure bay track right after you leave the starting line and head towards the first check point go off the track to the right and you should find an old ship wreck on the beach. on the side of the ship closest to the water is another box of money. this one was approxiamtely 750 dollars.

Even More Money:

In career mode on the stage farm road, after the 2nd checkpoint make a hard right and go underneath the railroad tracks, in the water you should find a random amount of money between 2 of the poles holding the road up!

Money Boxes on Tracks:

Black Gold:

As soon as the race starts turn left and head into the fenced area right in the middle of the track. Right next to the building on the right side is a box.

 

Arizona:

As soon as the race starts, turn around and go towards the train wreck. Go around the wreck and continue up the hill. Y ou should then see what looks like An Abandoned Ghost Town. Between 2 building is yet another box of money.

 

Laguna Del Sol:

After the start you should see some islands off to the right of the track. On the island that has three trees on it is another box between 2 trees.

 

Salvage Wasteland:

Follow the course thru the second chk pnt. and head down the long straight stretch but do not turn toward chk pnt 3. Instead launch yourself off the hill in front of you and you should almost land right on another bow of money. It is a little hard to see but it is right between 2 hills in this area of the track.

 

Restricted Area:

Follow the course through chk pt. 1 and head for chk pt. 2. When you see the paved road near chk pt 2 turn left instead of right towrad the chk pt. Soon you should see an airplane hanger that has a small jet inside. Guess what; there's a box of money in the corner.

Truck Stop 101:

In Truck Stop 101 after you go through gate 9, go straight, continue going straight and just before you hit the next highway you will hang a diagonal right between two hills and into a little ditch. Follow this ditch and eventually it will empty into a deeper one, continue along, and over a little hill into almost a pit; there you will see a treasure chest and within it will be $2447.00.

Silverton Pass:

Turn around at the start and go to the river. Go left in to the river and travel for aprox. .2 miles. Take a left when you see the branch off from the river at your left. To your left you should see a small cove. Go to the cove on the other side and collect the money

Secret Track:

On the level Salvage Wasteland there are 2 giant gates that you can run over and leave the compound through. If you drive around for a bit you will reach a road. On the road there are rows of buses with ramps on either side of them. Jump the ramps and follow the road. Soon the road will end and there will be a turn and a dirt road. The dirt road eventually leads back to the paved road! A new track!