Don't Be Scammed

We had a Jeep with California plates in Zihua. We had it hooked to a trickle charger, which kept the battery alive while we were gone, but the "stale" gas would plug up the injectors, so I wanted to get rid of it and a Mexican gentleman made an offer. I told him that one can't sell a foreign registered vehicle in Mexico. He said: "Don't worry about it", gave me cash and left. Never heard of any problems.