Fast engines will attempt to blow out your hearing on the outskirts of town during a hectic lineup of racing events. There's the Kobalt 400 Monster Energy NASCAR Cup Series, the Boyd Gaming 300 NASCAR Xfinity Series and Stratosphere Pole Day. Want more? Watch practices, attend charity dinners, see the Neon Garage… and go to an ear doctor first thing Monday morning. NASCAR Weekend 10 a.m.-8 p.m. Friday-Sunday at Las Vegas Motor Speedway.