To start off the Iowa Corn Indy 250 race weekend the Kum & Go station at 2110 Guthrie Avenue in Des Moines, Iowa featured an E85 promotion and a two-hour appearance and autograph signing by race car driver Marco Andretti. On Thursday, June 17 from 5:30p.m. to 7:30 p.m. customers that visited the Kum &…