"I look at my 1990 Superior Chevrolet and am still amazed - they did commercial glass on it..."
Kent - Those were indeed handsome cars and vehicles that represented real value for the buyer. Eureka was the pioneer in producing full commercial glass cars after the demise of the commercial chassis/cowls by Cadillac. The Eureka Buick, Cadillac, Chevrolet, Pontiac and Oldsmobile coaches all used those commercial components (as well as the windshields) but were built using beefed-up sedans as the base vehicles. The Eureka-Chevrolets were ground-breakers in offering value-packed, fully commercial professional cars as alternatives to the more costly Cadillac, Buick or Oldsmobile-based equipment and quickly became popular. They were so popular that as th years progressed, Eureka expanded the Chevrolet product range with more up-scale offerings. About two years later, Superior aped Eureka by introducing a Chevrolet-based model with commercial glass but, again based on a station wagon. And from the rear, all of the Superior/S&S Buicks and the Superior Chevrolets looked like what they were - stretched station wagons. With all their models at that time (early to mid-Eighties) it took the boys in Lima quite awhile to figure out how Eureka was building commercial glass cars, especially Cadillacs. without using a commercial chassis - which was going to be discontinued at the end of 1984 anyway. Once they caught on, they began offering commercial glass versions of the Cadillac, Buick and Chevrolet as well. This was an era of intense and often viscous competition.