Old Highway 66 still screams. Massive semi-truck tractor trailers share the busy road with nostalgia seekers cruising in 57 Chevy's, 1960 250 GTOs, and 1990 Dodge Vipers as they barrel across America's highway on the tiny 4-lane ribbon of black asphalt. Dotted along this popular freeway lies small towns full of novelty shops, greasy-spoon diners, and sleazy motels that are…