Watch out for hostile drivers in New York, Boston, and LA, too
                                
                                
                                    (Newser) -
                                    Miami has retained its title as the capital of road rage for the second year running, taking top honors in a national survey for brake-slamming, running red lights, and talking on cellphones. Motorists in Portland, Ore., report the least tailgating; if you do get too close, do it in St....