Spy photos of the upcoming Buick Regal wagon, via the Opel Insignia

The rakish wagon was lightly camouflaged, giving us our best look at the upcoming vehicle.

The wagon shares a lot of the same design cues as the Insignia sedan that we spotted earlier. The bottom of the front end is covered in heavy camouflage, masking the wagon's grille. It's unsure to tell whether the black nostril-like pieces sitting above the grille are vents or just tape. The prototype still shares the same upright nose as the model we spotted earlier, giving the wagon a wider stance than its predecessor.

The side profile of the wagon is sleeker, thanks to the extra four inches between the axles, than the current model is, with the design mimicking that of a shooting brake instead of a traditional wagon. The rear end of the wagon is also more upright with the taillights and bottom part of the fender jutting out beyond the glass. The boxy design sitting atop of the rear end doesn't match the rest of the vehicle and appears to be a part of the car's camouflage. With the tunnel-like design at the top gone, the rear end would have a more streamlined design.

With the next Regal expected to continue on as a rebadged Insignia, the likelihood of a Regal Wagon in the US look good, but aren't set in stone. Late last year, Buick filed two trademarks for "Tourx" and "Regal Tourx," pointing towards a high-riding wagon with all-wheel drive. Imagine these spy shots with a taller suspension and some crossover-inspired trim pieces and you have a wagon that could take on the likes of the Subaru Outback and Audi Allroad.