Renault-Nissan and Daimler recently announced a strategic alliance that promised technology and facility sharing that could result in the saving of over $1 billion per year. We'll have to wait a while before we can see any parts or factory sharing, but that isn't stopping the rumormill from running rampant.

The latest tease comes courtesy of Japanese enthusiast rag Best Car, which claims that the Infiniti M and G will share a common platform architecture with the Mercedes E-Class. The move would make sense from a money-saving perspective, as Infiniti could save hundreds of millions of dollars in development costs. Daimler could reap huge sums of savings through increased economies of scale, while likely receiving funding from Renault-Nissan to help pay for the costs of developing the architecture. The two companies are reportedly also looking into sharing engines, factory space in the U.S. and possibly even commercial vans.

But while it makes sense for Daimler to share the E-Class platform with Infiniti from a cash standpoint, we're taking this bit of news with a healthy dose of skepticism. Infiniti already has an excellent rear-wheel drive platform and there's a good chance that it's cheaper to build. But then again, if Daimler and Renault-Nissan are truly serious about saving over $1 billion per year, these are exactly the kinds of parts-sharing agreements that will help them reach their cost-saving goals.