Hey guys! In this guide I'm gonna show you how to get a bulletproof-car in Grand Theft Auto: Vice City. Take note that to get the car, your save file must be at around 7% completion. And it can - to my knowledge - only be done in the mission Guardian Angels.

Just play the mission Guardian Angels as normal. Simple, eh? Spoilers ahead!

Kill Diaz, instead of protecting him. And kill his bodyguards.

Then grab the car and you got yourself a free bulletproof-car!

If you don't believe me, here's some proof.
This works also on other versions of Vice City. And if you wonder how I got so much money to buy a hideout with a garage? I used this guide.

UPDATE: You can get a bulletproof-car with a savefile editor[www.gtagarage.com], though I would not recommend this, because you can cheat with the editor and place weapons in your savefile, and there's a slight chance of a corrupted savefile.