"Here's an easy way to go shopping for a nice car to jack.  Steal whatever clunker you can get your hands on, drive it to a busy intersection, and then get out in the middle of the intersection.  Traffic will start backing up and you can pick and choose your next car from the jam.  Just like shopping on a lot!" - TEM

"in the begging of the game you can't get across the bridge.so fly across, just tap in RIGHT R2 CIRCLE R1 L2 DOWN L1 R1 note: this cheat will not get you across the other bridge try the subway." - slick85

"if you kill 30 cops with the flamethrower you get a secret car at one of you hide outs" - tec

"To get a lightless Taxi is to go to Shoreside Vale, put 5 cars in your Shoreside Vale garage, and open the garage and run to the street and it should be there if not do it again till you see it.Note: you can get a griffitieless Hoods Rumpo XL." - Master R

"If you want a bullet proof car you can get one in the TURISMO mission given to you by el diablo ,the cheetas in that mission are all bullet proof so flip one over by ramming it then push it to your garage and you will have a bp cheetah. Another way is in the mission Salvatore called a metting the Strech is Bp after the mission take to your garage and you will have Bp strech." - reaper