The men were at Michael's International at 6440 Southwest Freeway when they got into the disagreement with a separate group of people.
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When everyone left the club, they started arguing again.
Police say a person in the BMW shot the two people in the silver Mustang, possibly on the Southwest Freeway.
But when authorities arrived at the intersection of the freeway feeder road at Beechnut, they found the Mustang. That driver was grazed.
His passenger was shot in the head twice and is in critical condition.
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The shooter's car is described as a white, 2-door BMW with a model year between 2014-2016.
It does not appear that the men in the silver Mustang fired back.
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