By 1989, GM insiders confirmed the next generation Chevrolet B-body sedan, the rear drive GM300, was well on its way out of the prototype stage and nearing production readiness. The radically aerodynamic 4-door was being prepared for the 1991 model year. Cadillac sources called their variation of the platform the GM380, to distinguish it and … Continue reading 1989: Cadillac’s Caprice?