This weekend's edition of CMT Hot 20 Countdown is sure to rev your engine. Tune in as we split our time between Nashville and Las Vegas. Cody Alan will be in Music City to share part two of his interview with Luke Bryan, while Alecia Davis heads to Sin City for the Kobalt Tools 400, a chat with NASCAR great Jimmie Johnson and to see the sights at the Las Vegas Motor Speedway. Also on the show, we're kicking off CMT's All-Time Top 40: Artists Choice. Find out who lands on our list as country stars vote for their biggest musical influences. Get all this plus much more Saturday and Sunday mornings at 11/10c.