Patricia Monson, 77, was seen at a Kwik Trip in Sauk City at about 11 p.m. Monday, seemingly confused and telling employees she didn't know how to pump gas, and that she was possibly heading to Sun Prairie.
"Employees called police but she left prior to their arrival," the silver alert said. Monson was last seen driving on Highway 12 toward Madison.
She is 5-foot-5, 120 pounds, shoulder-length gray hair and hazel eyes, wearing a light blue short-sleeved T-shirt and gray pants. She wears glasses and has a black purse.
Monson is driving a 2006 light blue Honda Odyssey, Iowa license plate number AAB 836.
