A witness saw the shooter run down an embankment with the gun and a briefcase.
The gunman didn't hit anyone, but the man who was shot at has been arrested for suspicion of assault with a vehicle.
A Southwest Station duty officer identified the man in custody as Mark Anthony Johnson, 33. He was arrested at 7:45 p.m. and booked late Thursday at the 77th Street lockup. His bail was $32,000, according to inmate records.
The gunman who left the Audi remained at-large and he had not been publicly identified by police.
Police also found drugs in the gunman's Audi and think the whole incident may have been a drug deal gone bad.
City News Service contributed to this story.
