Everyone has that one friend. You know the one. The one who steadfastly maintains, Rain Man-style, that he is an excellent driver. Yet you know that the simple act of taking the passenger seat with him behind the wheel tends to be an exercise in faith that today is not your day to die. Then there’s that other friend. The borderline racist/misogynist/homophobe/pick your offensive personality type, whose attitudes usually hover just below your tolerance line….