By Martha Groves -- It was, John Steinbeck wrote in “The Grapes of Wrath,” the “Mother Road” of Dust Bowl sharecroppers heading to the promised land of California. It was where George Maharis and Martin Milner got their 1960s kicks in a Corvette, and the highway that brought families to Disneyland and the original McDonald’s in San Bernardino.Immortalized in countless novels, songs and movies, Route 66 was the 2,400-mile road along which adventure seekers meandered from Chicago to the Pacific Coast, bedding down in tepee motels and eating at greasy spoons.

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