http://www.wikihow.com/Live-in-Your-Car
This is not a doom posting-just basics for people who may need to be more astute in a dire situation if it arises.
Find a safe and inconspicuous place to park. First, check to see if there are any organizations in your area (or a nearby area) that designates parking lots specifically for people in situations like yours; it's not only legal, but the organization might screen the people who use the lot, or even designate a women-only lot.[1] If there are no such lots available, and you live in a city, look for streets with no sidewalks, no overlooking windows, and adjacent to woods; the area should be sparse enough to avoid nosy onlookers but populated enough that the car does not stand out.[2] Parking lots of big-box retailers (especially those that are open 24 hours and have restrooms, such as Wal-mart) are great to clean up in and have security. As long as you spend a couple of dollars there and don't park in one place too often.
Camp sites are another option, although they usually have time limits and are almost as expensive as a hotel room. Some offer a shower for a nominal fee.
National Forests have some free camping with a limit of 14 days.
If there's no restroom, having a creek nearby helps for rinsing purposes. Know how to safely defecate outdoors and make a poop tube.
Five gallon bucket with a lid and lye in for odor.
Once you find a spot, try to arrive late at night, and leave before 7am. This will draw as little attention as possible to yourself.
If you can establish rapport with the manager of a retail store or restaurant, they may not give you problems about staying overnight, especially if they see your presence as a form of overnight security.[3]
A free hospital parking lot is another option. If approached by a guard, you can say that you're waiting to visit a sick relative.[4]
cont.on link above.
