GTA San Andreas Get through solid objects

this is a neat little glitch that can get you through buildings, mountains, etc

so here is what you need to do:

first of all this requires a cheat code(spawn hydra)
if my memory is correct for ps2 you press:

Triangle, Triangle, Square, Circle, x ,L1, L1, down, up

Now this next part is a little more challenging you must get at the right angle at the building
so that when you spawn the hydra it will be partially inside of the building with the cockpit side out, and far enough that you can get in (this may take practice) if you've done this right, get into the hydra and quickly get back out, you should be inside of the building, or mountain