Used car comes with unexpected option

Why doesn't this ever happen to me?

EUNICE, N.M. (AP) - A Eunice resident received more than he expected after purchasing a used car recently. There was $28,000 worth of marijuana stored under the back seat. The owner discovered the drugs and contacted police, who recovered 20 bricks - 22 pounds - of marijuana.

The local drug task force is looking into it and praised the new owner of the car for coming forward. You have to wonder how anyone forgets there's a shitload of pot under the back seat of the car they're selling in the first place {insert pothead joke here} but I wouldn't have called the cops. I would just buried it -- or something -- before I got someone arrested for pot.

What would you have done?