You can only live in your car successfully if your car works. If you have any lead time and see the writing on the wall ahead of time, get a van; ideally a windowless delivery van of some sort: you will have room under your platform bunk for storage, you can install a rooftop skylight/hatch for air, a rooftop rack for storage and even look out when the skylight is open. An anonymous looking white Chevy van, or Holden panel van in Australia makes concealment a lot easier. You're going to need a new or "newish" car or be a good mechanic to live in an older car. If you have an old car keep in mind that you're liable to break down at an inopportune moment if you don't stay on top of maintenance. Rent a post office box or a Private Mailbox (PMB). Although PMBs tend to be more expensive, you can receive packages at them and some services will let you use an address format which makes it appear to be an apartment; this can be useful when someone requires a physical address. Sign up for a gym membership, or, if a gym is too expensive, a more affordable alternative is (depending on your location) to enroll at a local community college where you'll then be able to use their gym facilities. Renew any paperwork that will require an address to process soon. Put valuables in a safe deposit box at a bank. If you have friends or family who can't (or refuse to) help you with your living situation, or you refuse to ask them for help, think about at least asking them if you can use their address. Have it readily available for police inspection. Why so essential? Because if your vehicle gets stolen, your home is stolen, you may never see it again and then you really are in trouble! It's not just your property like it would be to someone with a home or an apartment - it's a matter of your survival. Buy one now! You can buy one for about $20.

How would you rephrase that briefly using Vietnamese?
Tìm một chiếc xe phù hợp. Trước khi bạn bắt đầu sống trong xe, hãy sử dụng địa chỉ thường trú để: Luôn chuẩn bị sẵn giấy tờ cá nhân, giấy phép lái xe, bảo hiểm xe. Mua và sử dụng ổ khóa cần vô lăng!