When you buy a vehicle, you pick a code for it. In general, when you exit a vehicle, you should lock it. We have been lazy about doing this. The vehicles around the Terminal are mostly player owned, although we are ok with borrowing quads in general. A good plan whenever you get off a vehicle is to jot down your grid location on a piece of paper so you can find it later if you die.

The green icons are missions, so they are fair game.

Anything on a lockable vehicle or on your player are saved between sessions in the database.

You can disconnect anywhere after the countdown completes, as long as you aren't in combat (red flashing icon on the screen will show).

This is worth a read as well for other general info: https://steamcommunity.com/sharedfiles/filedetails/?id=496399029

Let me know of any other questions. I will try to get on their with you sometime soon. Snap is on quite often as well.