Do you think the Seville signified the beginning of the end for Cadillac? It was supposed to compete with the SEL 450 but unlike the SEL 450 the Seville attracted an older crowd.
I am not so sure the Seville can be the Cadillac to blame. I think you could argue the second generation (when they moved to fwd) was more of a problem. And the car that set up that fwd precedent? The 67 Eldorado. So perhaps the Eldorado started Cadillacs downfall.