If you own a CT6-V, it may encourage you to learn that the Blackwing engine at the front of it cost GM an estimated $20,000. That's because the design program that led to its production is estimated to have cost GM $16 million and Cadillac only made about 800 of them.

Why did Cadillac stop so suddenly? Why didn't it keep producing the engine until it could be anything but a big money sink? That's the subject of a new investigation by Road & Track magazine that you can now read on its website.

The answer, in short, is money. The development program that led to the creation of the CT6's Omega platform, and the product plan that followed it, were all too much to bear for a company facing falling sedan sales and big product changes.

Although the reason for its demise sounds simple-and, frankly, familiar-R&T's investigation really deserves your time. It's a great insight into the massiveness of the General and all the odds that stacked up against the Blackwing until the little engine that could, couldn't.

It also sheds a little light on comments that Cadillac's design boss, Brian Smith, made recently regarding the Celestiq. The car, we learned in an Automobile interview, was originally intended as an internal combustion car that started up where the Escala left off. Although there's no direct link between the stories, reading between the lines, it seems likely that the car was also intended to be based on the Omega platform. So at least Cadillac's electric ambitions are saving some of the work that de Nysschen started.