Under no circumstances do you sign over your title without a tag/notary present. The car must be fully transferred to the buyer otherwise you will be liable for any damages they may cause. Do not let them drive the car to the tag place. Meet them there.

If you give test drives obtain current proof of car insurance (call their insurance company to verify their policy) and valid drivers license. Do not let anyone drive your car without those 2 things. Ask to hold/count the money while they test drive it (you in the passenger seat) Test the cash to make sure it’s not counterfeit (search the internet).

Have them meet you at the local police station parking lot to see the car. Park near a surveillance camera.

If anything feels sketchy or a sob story is included that alters your plan to transfer/sell your car to them, walk away.

A “good” buyer won’t care you that you are being cautious. Only the sketchy ones will complain.