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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