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It's 178 miles across the Texas panhandle from Oklahoma to New Mexico now via Interstate 40. Amarillo is the largest city, but there are Route 66 type sights on both sides. To the east of Amarillo you may still find an old cafe along the route. To the west, you can find the famous Cadillac Ranch, with 10 Cadillac cars in a row, sunk part way into the ground at a slant, in the middle of a field; as well as gift shops and restaurants. The exact center of Route 66 is claimed by tiny Adrian, 40-some miles west of Amarillo.