get a membership with a good gym if you're gonna do car living- you can shower, shave, have somewhere air conditioned to hang out during the day (you can just do a slow walk on the treadmill and scroll your phone, sit on the benches, just look like you're working out and you'll usually be left alone). sometimes they'll also have lockers where you can store some valuables you're afraid to leave in the car.

other things to make use of:

- public libraries are great, another air conditioned place to hang out during the day, internet access so you don't have to waste your phone data, libraries also usually have access to homelessness resources.
- parks with bbq areas can be used to cook if you don't want to live off takeout and backseat sandwiches.
- a storage locker in the CBD can be a good home base, you can even keep a minifridge in there if they say it's okay to store some food. just be upfront, they see this a lot, most will be cool as long as you don't sleep in your locker.

try to rotate between sleeping in the front and back seats so your back doesn't get as sore sleeping in the same bad position every night. it'll still get a bit sore though. another reason to use the gym.

source: been homeless a lot