We can quit wondering where General Motors is heading with Buick. Maybe. If rumors dusting up from GM Inside News are to be believed, company leadership has the Tri-Shield's sights trained solidly on Lexus. We all know that the 2010 Buick LaCrosse was positioned as the answer to the Lexus ES 350, but supposedly, GM is aiming even higher and cooking up a Zeta-based sedan to go head-to-head with the Lexus LS. If you believe the hype, design work has already been given the go-ahead, but production ihas yet to receive an official OK from up top. Details are predictably scarce, but GM Inside News claims that the styling is sharp as can be.

Interestingly enough, the Zeta platform that would provide the basis for the rumored big Buick isn't exactly the same as the one underpinning the mega-Holdens prowling Australia (or the Caprice soon to be cruising your local donut shop, or the Buick Park Avenue that's already sold in China). Instead, GMI says that the luxe Buick will be built upon something called the Premium Zeta Platform, and that the oft-rumored Cadillac flagship will use the same bones. Sounds great, but until we hear something official from The General, we won't start holding our collective breath.

[Source: GM Inside News]
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