The 2018 Challenge of the Americas closed out the winter season with the third and final event in the championship. The Simraceway Performance Karting Center in Sonoma, California played host to the fifth and sixth rounds of Challenge, crowning the seven Rok Cup USA champions. On Friday, EKN’s Rob Howden provided the call of the final practice session for all seven race groups around the ‘National Reverse’ layout, serving as the newest episode of the ‘Happy Hour with Howden’. Sitting down with Howden included Challenge promoter Andy Seesemann, Rok Shifter Senior driver Nicky Hays, JH Motorsports’ Josh Huff, and Mike Rolison of Rolison Performance Group.