Aside from a few notable exceptions, automakers engineer powertrains with their own in-house experts. Designing and conceptualizing a powertrain can take years and billions in R&D money. Sometimes, some automakers are nice enough to let others use their powertrains, usually for companies that don’t have the R&D money to create their own. Or maybe they’re just GM, and they offer the rather special LS as a crate motor, which every supercar startup seems to be using. Sometimes, however, even the
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