http://www.motortrend.com/features/auto_news/2008/112_0806_next_saturn_aura/
The Saturn Aura is about to become obsolete. GM's European wing has officially leaked photos of disguised Opel Insignias on test. Insignia replaces the Vectra, which is the Aura's donor car. The Insignia will be revealed at the London Motor Show on July 22.
Insignia is the first car on GM's new global Epsilon platform, which provides replacements for the Chevy Malibu and Pontiac G6, Saab's 9-3 and 9-5, Cadillac BLS sedan/BLT wagon in Europe, a Korean-built car sold as a Suzuki, a Holden in Australia and the next-generation Buick LaCrosse.
"All of these cars will be radically different from each other but they will all use common engineering solutions," Bob Lutz told us at Geneva. "They're going to be so different in aesthetics and driving characteristics, so it's not one car dressed up in different ways. The exception is 'lookshares' [Saturn/Opel/Vauxhall] - we save one division's worth of engineering and since they're on different continents nobody ever says 'Gee, why does my Saturn look like an Opel.