Cadillac teases two new V-Series prototypes at the Detroit Grand Prix

We told you earlier this week that there would be more to come from Cadillac's V-Series of performance vehicles following the introduction of the brand's CT4-V and CT5-V performance sedans. We just didn't expect it to come quite so soon.

Cadillac surprised attendees of the 2019 Detroit Grand Prix as two new prototypes took to the track for what we figure must have been demonstration laps in between other official race events. A CT4-based machine wearing funky blue camouflage joined a red-hued CT5-based prototype on the track, with driving duties split between Mark Reuss, president of General Motors, and Ken Morris, vice president of Product.

Exactly what's powering these prototypes is still a mystery, but we have our suspicions that these two beasts are putting down a lot more power than the 320-horsepower CT4-V and 355-hp CT5-V that underwhelmed enthusiasts earlier this week. We wouldn't be surprised if there was a version of Cadillac's twin-turbo Blackwing V8 engine under the hood of this V-badged CT5 prototype.

Cadillac is being coy with further details, saying only that these two vehicles "represent the next step in Cadillac's V-Series performance legacy." So we'll just have to wait for now. But in the meantime, feel free to peruse the images above and speculate in the comments below.