Previous owner didn't register vehicle and isn't listed on title seller gave.

[adjusterjack]

Notarization has NOTHING to do with the truth or lie of a document that is being notarized. Notarization (in this case) only means that the person who signs the document has been properly identified by the notary.

You can get a notarized bill of sale for the purchase of the Brooklyn Bridge but that doesn't mean you have actually bought the Brooklyn Bridge.