This week’s segment of “Rollin’ On TV” offers an in-depth look of the National RV Trade Show in Louisville, Ky., as the Recreation Vehicle Industry Association (RVIA) marked its 50th year of hosting the event. Highlights include an interview with RVIA Vice President of Administration Robert “Mac” Bryan along with the presentation of the “RVBusiness Best of Show” to Navistar RV for its revival of the Holiday Rambler Presidential fifth-wheel.