This is probably a more general question the Delorean specific, but since Deloreans are all the same age I figured someone may also have run into this:

In the State of Maine, a car 1994 or older is exempt from needing a Title to register, only a Bill of Sale. More so, when asking if they would issue a title I was told no.

When I bought my car last year, the seller (second owner) included all previous paperwork with it, including a sign Vermont title from the 1st owner to him when he bought it.
He wasn't required to give this to the state in 2001 to register it due to the laws at the time, the same laws I followed when I bought the car from him.

I know States handle Titles different and some require all cars to have their title in order to register it.
Have other people ran into this issue either buying or selling their cars?
The car is registered currently and if I sell the car in my home state this won't be an issue, but I am thinking the Delorean market is a wider group and it will be a possibility of selling it to someone out of state.