title question

[pooch]

What is a USA title ?

Here in OZ, all we need is a bill of sale to register any car that is not a statutory written off car .

Statutory write offs were only introduced a few years back to try and reduce rebirthing of stolen wrecks .

So over here, if I have a handwritten receipt for a model A for one dollar , I can register it in my name .

I have heard that cars without USA titles cannot be imported out of the country .

What is the gist of title in layman's terms ?