Jimmie Johnson celebrates a NASCAR Sprint Cup Series win at Charlotte Motor Speedway in Oct. 2016 (photo courtesy of Getty Images for NASCAR). By AMANDA VINCENT Charlotte Motor Speedway has fed speculation that one of its yearly Monster Energy NASCAR Cup Series races on its road course in 2018 with an announcement that the track is upgrading its infield road course. "There are several truck loads of crash walls and catchfence on the way in, and I think it's something that could definitely have a place on the (Cup) schedule in the future," Speedway Motorsports Inc. (parent company of Charlotte Motor Speedway) CEO Marcus Smith said, according to an NBC Sports report. Pre-season speculation had the facility, possibly, transitioning its late-season Cup Series race to the road course this season. That speculation came after Cup driver A.J. Allmendinger participated in a test with his No. 47 JTG-Daugherty Racing Chevrolet on the CMS road course in January.