Discription of Events: Driving on I-10, I had a truck in front of me and this idiot right behind me. He tries twice to go around us recklessly and cant because someone would be there. As soon as I could I tried to take the exit to Westlake and halfway into the lane I see him in my right hand mirror speeding in between me and the railing. I had to slam on my brakes swerve away from him and blare my horn. Everyone behind us had to slam on their brakes as well.