^very good post
another good bit of information to have is to request to see the owners Drivers license, and copy down his name, address, and license #
that way if anything does happen and the cops come knocking on your door, its not : i sold it to john smith, i think hes from XXX
instead its "i sold it to john smith, 650 lundy lane, buffalo NY, 14225, and his license number is 756-7689-3782
even if his licence address is old, they still know exactly which of the dozen john smiths from that town that he is ....
just a thought