Has anyone know of or heard of the possibility of being scammed when selling your own car to someone unknown?

I'm trying to sell my car at the moment (old car not applicable for HP loan anymore) and recently received an enquiry.
He claimed to be a broker from Sabah (red flag to me) and is interested to buy my car to be sold to his customer or whatever. It seems like he wants to offer personal loan to whoever is buying from him.

So he's gonna arrange for viewing in the next few days (not sure what's gonna happen next) and he did mentioned that if his buyer asked about the price, he wants me to ask the buyer to refer back to him.

Has anyone heard of such modus operandi?

I guess if he's really a genuine buyer, we can wait until payment is fully cleared into my account before proceeding with any thumbprint procedure and keys handover.

Saw a few case on the Rolex watch scam where cheque were given and then bounced back - was hoping this might not be the case.

Make sure only to accept cash or bank transfer no cheque. If want cheque, only accept bank draft or banker's cheque. Nothing else.

Banker's cheque safe la. It is cheque from a bank which is basically as good as cash.

Personal or company cheques don't accept.

Always allows 3 working days to clear before signing anything. Signing is ok but don't thumbprint. Without the thumbprint, the ownership cannot transfer.

Ya I guess I better be extra careful
Too many red flags tbh

-This fellar has a locked Facebook profile with no profile picture, name also different from whoever who contacted me
-Immediately asked for Whatsapp number upon contact (even tho I already left my contact in the listing)
-Uses a business Whatsapp account without any business details