A 22 year old Madison woman is sobering off in jail this morning after she allegedly played "bumper cars" with nearly a half dozen vehicles. Before bar time, witnesses saw the woman careen her jeep into a couple cars in the 500 block of Mifflin Street. She then made her way over to West Washington Avenue and then back again to Mifflin, where she struck three more cars. Police say she was very intoxicated, but refused a breathalyzer. A drunk driving charge is pending.