Sebastian Vettel's red-mist moments are caused by a killer instinct that means he is occasionally prepared to "win at all costs", says Christian Horner. The Ferrari man is on a final warning from governing body the FIA after two 'road rage' incidents in seven months. Vettel, 30, banged wheels with Lewis Hamilton in Azerbaijan last month and swore at race director Charlie Whiting over the radio in Mexico last October. "Sebastian wears his heart on his sleeve," said Red Bull boss Horner. "He is involved in a very intense battle. He sees an opportunity to be champion again this year and he knows he's going to need everything going his way against Mercedes to achieve...
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