5G is the new wireless technology. In vehicles, it is used to support the network associates for sensor on the provide and roads V2X service to drivers and pedestrians. The 5G V2X (vehicle to everything) communication is a benefit to us, for low latency, high reliability and large communication coverage. In this novel, we survey how the 5G technology is used in autonomous vehicles. Mainly we review the architecture of 5G, V2X communication and its uses. And then we discuss mobile network evolution. we also provide the advantages of 5G technology in autonomous vehicles and 5G design principles. This paper also outlines how 5G technology is used in Artificial Intelligence (AI). Finally, for a future generation, there is predictable to pay more attentions and effort into developing 5G V2X services.