source: MotorTrend I ease the muscular, low-slung four-door onto the street and into the Friday morning traffic. The acceleration is swift and mostly silent. A distant high-pitched whine increases in pitch as speed rises, accompanied by the percussive patter-crash of low-profile 22-inch tires at war with a stiffly sprung, hastily calibrated suspension. Most concept car drives take place in the smooth safety of a secluded proving ground or a closed racetrack. But I'm driving the hand-finis...