Tray Carlisle, who operates Carlisle Auto Air in San Antonio, Texas, became assured a recent purchase of a diagnostic tool during the recent Automotive Aftermarket Product Expo (AAPEX) in Las Vegas. Interviewed by Elliot Maras, editor of Professional Tool & Equipment News, Carlisle said the trade show gave him a chance to see a lot of diagnostic tools, and the experience confirmed that he made the right choice. To listen to the interview, click the bar below.