CHICAGO (CBS) — Two men were in critical condition Sunday afternoon, after a car ended up in a retention pond in west suburban Aurora.

Shortly after 8 a.m., a 33-year-old man and his 47-year-old relative were driving in a parking lot in an industrial area in the 300 block of Marshall Avenue, when the 2010 Nissan Maxima went into a nearby pond and flipped over, trapping the men inside.

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“We believe the 47-year-old man is an uncle to the 33-year-old man, and he was actually him how to drive. They thought that a quiet area would be a good place to practice,” said Aurora city spokesman Dan Ferrelli.

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Police said the two men were underwater for about 10 minutes before they were pulled out. Police and a bystander were able to right the car, and then a fire department dive team got the two men out by cutting their seat belts.

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The younger man was taken to an Aurora hospital. The older man was airlifted to a hospital in another suburb. Ferrelli said both men were in critical condition.