ROME - The zig-zagging car gave them away.

When Italian police pulled over the vehicle, they found a completely naked 70-year-old woman who had been trying to have sex with the driver -- 11 years her junior.

After demanding the joy-riding couple get dressed, the police tested the semi-nude male motorist for drunk driving.

"He was three times over the legal (blood-alcohol) limit," said police commander Angelo D'Anardo in the city of Cologno al Serio, northeast of Milan.

"We assume they must have been drinking at lunch and then things got out of control."

Asked if the couple were married, D'Anardo said he wasn't sure -- but somehow doubted it.

"Married people wouldn't probably do anything like this."