This is really pretty foolproof for the buyer and I have done it several times in instances where the lending institution is halfway across the country, like Chrysler financial and GMAC. Don't forget the lending institutions have to deal with this every day also so they understand.
Get on the phone with the lending institution, explain the circumstances and get a contact there to fed ex the paperwork to. Go to the car (or have someone else do that) do the bill of sale, have it notarized with three copies, have one check for the seller for his proceeds, another check for the balance owed to the lender, proceed with the seller to a fedex/ups office, make out a fed ex envelope addressed to you, the buyer, fold that and enclose it in another fedex envelope addressed to the lender, enclose the check to the lender with the bill of sale and instructions to fed ex the the cleared title back to you the buyer in the prepaid fed ex envelpoe enclosed. Give the seller his portion of the money, take the car and a copy of the bill of sale, call your contact at the lending institution to tell them to expect the envelope. Wait for the title to reach you by return fedex.
Sellers should make sure the checks they are getting are marked withdrawn from the account, a cashiers check can be canceled.
Scam factor is eliminated for seller as he is on the phone with the buyers bank to check funds have been withdrawn.
This really works well when both parties call the original lending institution and the buyers bank on conference calls and buyer(or his rep) and seller are together at the fed ex drop.
You're talking to his bank and he is talking to yours.