Makes every mile magnificent! When they were new, they must have been a marvel to the weary traveler; even though I came along too late to experience them as anything but nicked-up / scuffed-up cigarette-smoky old tubs with weary seats and bathrooms whose disinfectant smell blared through the whole bus, they they had style. Wiki:

The PD-4501, the most distinctive American parlor bus design of the modern era, was the result of five years of GM Truck and Coach Division effort based on a design by Raymond Loewy.

Of course.