Pregnant panhandler caught driving off in Mercedes Benz (VIDEO)

SAN DIEGO, Calif. -- A pregnant woman who was begging people for money outside a San Diego shopping center drove off in a Mercedes-Benz, according to an eyewitness who captured the incident on camera.

The woman stands outside local shopping centers every weekend with her son, sometimes with her husband, begging for money.

"She sits there with the sign. He goes and parks the Mercedes. And they put up the sign and not less than five minutes, here she is getting money from all these people," said Michelle Smith, who took photos of the woman.

Smith says the panhandler came after her with a big rock when she saw the camera.

"Next thing I know, she picks up this big boulder, about this big, goes over her head. I don't know if pregnant people can do that, but it was pretty big over her head and coming at me with this rock," Smith said.

An eyewitness called 911.