Invisibility:
     Pause the game, press R1, L1, L1, R2, L1, L1, L2.

Lighter cars:
     Pause the game, press L1, R1, R1, L2, R2, R2.

Increase time warp:
     Pause the game, press R1, L1, L2, R2, Right, Right, Right.

Decrease time warp:
     Pause the game, press R2, L2, L1, R1, Left, Left, Left.

No gravity:
     Pause the game, press R1, R2, R1, R2, Up, Up, Up.

New Extra Cars:
     Take  Midnight  Racing  Club  and save your cars the load them on
Smuggler's Run and you will have extra cars!

Hidden Tunnels:
     From  where  you  start,  drive over the sand dunes in the desert
level  until  you  are  in plain view of the windmills. Drive over the
hills and you will see a long dirt road.

     Follow  the road towards the 1st border check point. Keep driving
until  you  pass  the  antique  post  office  and  a  small  group  of
hitchikers.

     The end of the road should be near, find then end and take a right.

     "4-Wheel" through the mirage pond until you see a oval tunnel.

     Drive  through  that  tunnel,  and  you  will  end up in a "ghost
valley",  then  follow the dirt tracks until you get to another tunnel
but do NOT go into it.

     Instead,  take  a right up a steep hill. Once at the peak of that
hill, go under the boulders located to your right, and follow the road
that leads to a pit.

     Drive off into the pit, and you'll find another hidden tunnel.

     Go into the tunnel and you will now end up in another giant dark pit!

     Go into the new pit and you'll notice ANOTHER hidden tunnel.

     You  can  either drive into the tunnel and take a gigantic flying
dive  directly  over the post office or you can come out the other end
and  be launched 50 feet into the air! This is where you can climb the
side  of  the  mountainous  hill  to  get  to  the  top  of the desert
mountains.  Just  use make sure you use the Hummer, since it can climb
large objects.

     Once  your  on  top  of the mountain, you will see that it is the
highest  point  in the level, allowing you to see everything there is.
You  will  also  notice a black wall that is the end of the map! There
are plenty of traps, so be careful! Enjoy the view!

On Top Of The World:
     To get up to the edge of the map, find the archway that is at the
top  of  the long stairs. Climb onto the cliff that it connects to and
then drive over the arch and up the hill. Fllowing the path leads to a
dead  end  with a spectacular jump if you climb the wall there. If you
climb the wall on the left side of the hill that you just drove across
via  the arch, you are now on the highest elevation on the map. Slowly
drive  along  the  ridge until it broadens out. Once on top you can go
nearly  half  way  around the map, bounded by the jump/pit area on the
southwest corner and the airfield on the west.

Hidden tunnels:
     From  the  starting  location  in  the Desert, drive to the Mayan
Temple. There should be a tunnel on the other side of the tunnel...But
if  you  drive  through  that tunnel and then through the next one and
take  an  immediate  left  up a hill and then turn right under a large
rock  you  will  come to a really cool area. Then drive until you fall
into  a  large  pit. At the bottom of the pit is a large tunnel, drive
through  that  tunnel. You will be dumped into another large pit, turn
left  from  the  bottom  of the pit and you should see a tunnel. Drive
through  it  and  you  should  come out a secret hole in the side of a
mountain which you cant see from the road you land on.