Kevin Hart -- LAX Bus Driver Rehired Because of 'Kevin Hart Effect'

Kevin Hart no doubt has power in Hollywood ... he got a suspended National Car Rental driver her job back ... and then got a pass from cops for making an illegal turn.

It all started when driver Genesha Bradley-Douglas stopped her bus at LAX -- leaving passengers stranded for less than a minute -- so she could take a selfie with Kevin Hart. Apparently National wasn't happy when they saw our video and sidelined her.

But Thursday Kevin made his plea for mercy in a short video directed at National ... and hours later Genesha was back on the bus.