Gas Station & Convenience Center go Results Found: 2 Button group with nested dropdown Shell Speedee Mart & Car Wash Shell Speedee Mart & Car Wash 431 S. Hwy 6 Gretna NE 68028 (402) 332-5400 Gretna 66 Gretna 66 104 Glenmore Dr, Gretna NE 68028 Gretna NE 68028 (402) 332-4424