Teens competed on the NASCAR track in Grant Park for the 13th annual X-Stream Push Kart Derby. The winners of this year's race, the team from Columbus Park, built their homemade karts in three days. Michael Curry, 16, said he and his teammates worked well together.

TNT takes over for NBC, which aired the race the last two years. Before debuting last week in Atlanta, TNT hadn’t carried a NASCAR race since 2014.

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