Isaac Hajjar heeded Marco's advice

      This season Isaac Hajar will debut in Formula 1 in the Racing Bulls. As early as last year, Red Bull's motorsport consultant Helmut Marko said that the French racer is excessively emotional, and he needs to learn to keep himself in control. Isaac replied that he heard the advice and from now on will not swear during radio conversations with the team. Isaac Hajar: "Yes, I get angry on the radio. Some people consider it a weakness, but it doesn't matter to me. I realize what I'm doing and I know why I do it, but I understand what I've been told. This year, I'm going to stop all of that. I will continue to yell at myself while behind the wheel, but no one will hear it."