Here in Georgia we don't title old cars. You register the vehicle and get a tag based on a bill of sale. It can even be handwritten. They supposedly do a quick VIN check to see if it's stolen (knock on wood, I've never had one come back that way) and then you show proof of insurance and you are on your way! Many states treat old cars this way. I could be driving your friend's Duster tomorrow.
The problem for states that DO require titles is what to do when somebody buys an old car from a state like Georgia. They have to have SOME process in place to give you a title if you buy a car from me. Some states ask for a copy of the registration and a notarized bill of sale. Some have other documentation requirements. But MOST have something you can do in that case because it happens a lot.
What you do (and it's how many of the "title services" work) is find a friend in Georgia, Alabama, Maine, or one of the other non title states to register your car in their name in that state and then SELL it back to you. It's a simple process that works.
You take the paperwork back to your motor vehicle dept and say "I bought this car from a guy in Georgia and they don't have titles..what do I need to give you to get a title here?"
Then you provide whatever they want and you have a title in your state.