Opel's GTC concept hit the motor-show scene in 2007, debuting as a preview of what could have been a new Calibra, Monza, or Vectra coupe.
The concept's major styling cues eventually spawned the Insignia range we know today, but for whatever reason - let's blame the global financial crisis that hit a couple of years later - a production coupe never eventuated.
New reports out of Europe however suggest that Opel is ready to try its hand at a new 'Monza' coupe, with a Frankfurt Motor Show debut on the cards for September.
But, while the 220kW turbo V6 GTC concept rode on the front- and all-wheel-drive Epsilon II platform, Germany's Auto Bild reports that this new concept will get a rear-wheel-drive layout.
If that's true, you can write-off any ideas that the new coupe will be a hard-top version of the big new Cascada convertible.
Engines would likely include the same options offered with the ATS, including 201kW turbo four-cylinder and GM's 237kW 3.6 litre six.
Expect the concept to evolve the brand's still-fresh styling language, hinting - as the GTC concept did - at the design of Opel's next-generation range.
Interestingly, the report adds that the new concept will revive the Monza name, a badge that has not appeared since the Opel Senator-based coupe of the early 80s.
Footnote: Australian motoring icon Peter Brock was known to have plans for importing the Monza through his HDT brand, where it would have joined his versions of the new Rekord/Senator-based Commodore.
Ultimately, the plans fell through. Brock did deliver one 'proof of concept' Monza at the 1984 Canberra Motor Show however, and it has floated around the enthusiast scene ever since.