Scary moment for NASCAR driver Bubba Wallace -- who PASSED OUT during a post-race interview Sunday ... and the whole thing went down on live TV.
... but good news, he's OKAY!!
Wallace had just completed the Folds of Honor QuikTrip 500 at Atlanta Motor Speedway -- where the temperature was above 85 all day long with high humidity.
When reporter Jamie Little began asking Bubba about the race -- he finished 21st -- Wallace began to nod off in a scary way. It was obvious something was wrong.
A crew member immediately called for the medical crew -- and Little says, "He's not okay" .