a taxi ride

A man takes a taxi. When the taxi Driver gets to the first red light, he drives straight through. The man, frightened, asks, "What are you doing?"
The Driver answers, "Don´t worry, I´m an expert."
The Driver goes through more red lights, and the man, getting very angry, complains again. The Driver replies, "Relax! You´re in the Hands of an expert."
Then the light ahead turns green and the Driver suddenly stops. the man picks himself off the floor of the taxi and asks, "Why did you stop now? The light´s green!"
The Driver answers, "It´s too dangerous, There could be another expert crossing."