Free-Gas Guzzlers Win 'Duh' Award of Week:

PITTSFIELD TOWNSHIP, Mich. (AP) - You can pump, but you can't hide. Some motorists in Michigan have found out the hard way that you can't just gas and go.

They discovered that because of a computer glitch they could swipe their drivers' licenses instead of credit cards to gas up for free at the pumps outside the (search) chain.

A total of 107 people figured it out, many of them students from nearby colleges in Ypsilanti and Ann Arbor.

In some cases people got as many as 15 fill-ups over a three-week period. Meijer got hosed for thousands.

But it turns out the information from each transaction with a drivers' license was stored on a central computer and police are tracking down the culprits.