Many mistakenly believe the current Aura and Vectra are built on the same platform and share sheetmetal, but that's not quite true. The Vectra is built on the Epsilon platform, while the Aura is built on a stretched version of the Epsilon and they really don't share many if any common body panels despite their similar styling. The Epsilon II platform, however, will underpin the next-generation Vectra, and that car will be a body double for our next-gen Saturn Aura due to debut around 2011. Moral of the story? This concept car will give us some far reaching clues as to what the 2011 Saturn Aura will look like. Until then, we are expecting that the Epsilon II platfom will appear first in the U.S. with a Saturn badge as an Aura Wagon. Though it's strange to offer a wagon version on a different platform than its sedan counterpart with entirely different sheetmetal, it's thought that the Aura Wagon will be positioned upmarket like an Audi Allroad.
[Source: GM Europe, Autocar]