impatient taxi driver

Yesterday i had a bad experience with taxi driver. He is so super impatient. He keep pressing the horn to urge the car in front to move faster. He sounded the horn for at least 5 times during the whole journey. Every traffic junction, if there is a car in front of him, he will surely sound it if the person in front lag a little.

I am thinking :" why the RUSH???"

Singapore can never be a gracious society if we have drivers like him.