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Alien Dreadnought part deux?

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Tesla Files Patent Application For Die-Cast Unibody Machine | CleanTechnica

Today, a collection of stampings is welded, riveted, and bonded into a completed unibody structure in a process that can involve dozens if not hundreds of steps. If the number of steps could be reduced, the entire process could become much more efficient. Basically, using die casting technology to make the unibody frame of an automobile — a process that has been done using metal stampings for 50 years — could eliminate many of the steps in the traditional assembly process, saving time and cutting costs.