If it's really a scam, it will go like this:

You: "I want $5000 for my car."

Them: "OK, the check is in the mail."

You receive a check for $30,000, and say: "You sent too much."

Them: "Oh, sorry, our bookkeeper made a mistake. Deposit our check and send us a check for $25,000."

You: "OK, the check is in the mail."

====================

You send them a good check, and....

Surprise, surprise, three weeks later you discover that their "banque cheque" is fraudulent.

Do you live in a stucco house? You should, because you'll be the stuckee.

Whether or not they take the car at this point is irrelevant.

Soooo......

If you go for it, insist that the payment be made to your bank by another bank. DO NOT ACCEPT A CHECK UNLESS IT'S A BANKER'S CHECK FROM A BANK TELLER.
--
Don Foster (near Cape Cod, MA)