The Crystal Lake Northwest Herald reports a Shell station in Woodstock wound up mistakenly selling nearly-free gas for about two hours Sunday night.
As word spread, cars lined up and jostled to fill-up for one cent per gallon.
Woodstock Police Sgt. Dennis Leard says authorities had to use an emergency shut-off to stop the sales before the gas station closed in order to reset the pumps to regular prices.
"The clerk didn't appear to be aware [of the price change]," Leard told the paper. "We made him aware of the situation and instructed him to shut off his pumps and fix the problem."
But before that, cars were blocking traffic and lining up on the street to reach the cheap gas.
Leard says the station clerk working at the time wasn't aware of the glitch.
It wasn't clear how much gas was sold.
Woodstock is 50 miles northwest of Chicago.
The Associated Press contributed to this report
GAS PRICES: Cheapest days to fill up in Minnesota, Wisconsin
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