The model didn't last long, and was compromised in its execution.

Cadillac has pulled the plug on its flagship CT6 plug-in hybrid, having debuted the car at the 2015 Shanghai motor show.

Speaking with GM Authority, the company said it would focus on "the launch of the comprehensive 2019 mid-cycle and the first-ever V-Series variant of the top-of-range sedan" for 2019.

"Cadillac remains committed to electrified systems for our vehicles. Although production of the CT6 PHEV for North America is discontinuing for the 2019 model year, alternative fuel vehicles remain a part of our future product portfolio as we move deeper in to our 10-year plan," the statement says.

"GM has committed to 20 electric vehicles by 2023, some of which will be Cadillacs. Cadillac will also continue to be the spearhead brand for many of the company’s technologies, such as Super Cruise and V2X."

Supply to the American market was limited throughout the CT6's life, and the product was compromised from the start. The 18.4kWh battery was adapted from the Volt, paired with a 2.0-litre LTG turbocharged four-cylinder engine for 644km of range on a full tank/charge.

Pure-electric range was rated at up to 50km, and the 100km/h sprint took just 5.2 seconds. Unfortunately, the battery pack ate badly into the boot area, and at US$80k ($110k) it was priced in line with the Tesla Model S.

The CT6 PHEV isn't the only recent casualty at Cadillac. The company earlier this month announced the death of its subscription service, and earlier this year said it was nixing diesel development in favour of electrification.

Clearly, that plan didn't include the CT6 PHEV.