Iowa City, IA and Cedar Rapids, IA, 2016-Sep-30 — /EPR Retail News/ — Kum & Go will offer E-15 fuel for $1.15 per gallon at several Cedar Rapids and Iowa City-area Kum & Go locations from 6 a.m. to 6 p.m. on Friday, September 30. E-15, a fuel blended with 15 percent ethanol and 85…