UPDATED: NASCAR Xfinity entry list for U.S. Cellular 250 at Iowa Speedway By Dustin LongJul 27, 2015, 3:15 PM EDT Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window) 0 Comments Thirty-nine cars are on the preliminary entry list for this weekend’s NASCAR Xfinity race at Iowa Speedway.Here’s the entry list: