Cadillac just opened the order books for the CT6-V the day before yesterday. Now Motor Trend reports that, in less than two days, the company pre-sold the entire year's allotment of 275 examples.

And not for an insignificant amount, either: GM's luxury division charges $88,790, plus destination, for each one. That makes it one of the most expensive cars made in America – but its future is in doubt. The Detroit-Hamtramck plant that produces the CT6 is being shuttered, leaving Cadillac to search for a new home for its flagship sedan.

The performance version of Cadillac's flagship sedan is a proper barn-stormer. It packs a 4.2-liter twin-turbo V8, built by hand and dubbed the Blackwing, rated at 550 horsepower and 627 lb-ft of torque. That's 90 horses short but just 3 lb-ft down on the CTS-V, with the much bigger 6.2-liter supercharged V8 it shares with the Chevy Camaro ZL1 and Corvette Z06.

The CT6 is also a significantly bigger car than the CTS, so we wouldn't expect the same level of performance – which is probably why Cadillac initially wanted to sell it with the V-Sport designation instead of a full-on V model.

With less power but more space, the CT6-V's $88,790 asking price comes in less than $2k less than the CTS-V's $86,995. Whatever the price, the name, and the level of performance it's capable of delivering, those 275 fortunate buyers who got their deposits in early will be treated to two days of advanced driver training through the Cadillac V-Performance Academy at Spring Mountain in Nevada, which only stands to further sweeten an already pretty sweet deal. Here's hoping they find a way to keep it around even after the initial allotment's all gone.