DETROIT — The CT6 was supposed to be the flagship sedan that led Cadillac's rebirth. It was the first full-size Cadillac with rear-wheel drive in two decades, the only Cadillac offering a high-powered Blackwing V-8 and the only way to get Super Cruise, a driver-assist system that many critics say outperforms Tesla's Autopilot.
But four years after its arrival, the car that former Cadillac chief Johan de Nysschen introduced as "prestige luxury reimagined" is kaput. The Michigan plant that stopped making it last week is slated to instead churn out electric vehicles starting next year.
GM looked at a number of options to keep the CT6 alive, GM President Mark Reuss said. But executives didn't find a viable solution."To transform the business you sometimes need to make tough decisions; this is one of those times," Reuss said in an email to Automotive News. "But the Cadillac portfolio is in a great place. With the addition of the CT5 and CT4 sedan…