If you have not found this glitch yet it can be used to get things like cars in GTA v I found it neat and a good money farming method. 1)place a marker on your map like this on the money symbol 2) Get a boat and travel to this location 3) Dive under water and find the submarine at this location 4) On top of the submarine there should be a case go ahead and pick it up then switch to another character imdeiently. 5) Switch back to you're character with the case and you should see the case there again. you can keep doing this as many times desired to.
Sorry photo didnt post right just go to this link https://www.dropbox.com/s/bbkmuqpnnyocrgi/468px-Exploit-1.jpg
Pretty neat, i really do need to play GTA5 again. We had a few good Digiex games near the games release and thats been it for me sadly. I think i have about 1 million in my bank at the moment for GTA Online.
If it was I can always post a tutorial on how to mod for money but I think ign would have removed the video if it was patched
As far as I know all these random glitches are patched Which is a shame when you just want to arse around!