The big Fleetwood Seventy-Five nine-passenger sedans and limousines for 1959 and 1960 listed at $9533 and $9748. They rode a stretched 3805mm wheelbase, stood 50mm lower than a Rolls-Royce, but did not look as cumbersome even though overall length measured a whopping 6218mm. The Fleetwoods featured separate air conditioning and heating for the front and rear areas, auxiliary seats in the rear, and power door locks. The chauffeur's compartment was finished in gray or fawn leather to match the rear compartment, or could be ordered in basic black. The rear passenger area exuded luxury with sedate gray or fawn Bedford cords and wool broadcloths. The doors had lights along the bottom to light up the ground when opened. The limousine window treatment was deliberately more conservative than other models in the Cadillac lineup, with squarer lines and a smaller back window for privacy.

The long wheelbase sedan and limousine had auxiliary jump seats, high-headroom formal six-window styling, broad ribbed roof edge beauty panels and trim generally similar to 6200 Cadillacs in other regards. The limousine passenger compartment was trimmed in either Bradford cloth or Bedford cloth, both in combinations with wool. Florentine leather upholstery was used in the chauffeur's compartment.