INDIANAPOLIS — If it’s January, it’s time for the North American International Auto Show in Detroit. Arriving at the glitzy affair requires a comfortable car for the long drive, agile quick performance to get you there safely, and elegant style to set valets back on their heels. It’s guaranteed to be snowy, so having all-wheel-drive is a big plus. I couldn’t have picked a better traveling companion than the 2018 Audi A5 Sportback.