"Not invented here" isn't a big issue with automakers, unless you're talking about Tesla. Most automakers license core technology (i.e., engine, chassis designs

"Not invented here" isn't a big issue with automakers, unless you're talking about Tesla. Most automakers license core technology (i.e., engine, chassis designs, etc.) from other companies. Many of them license technology from their competitors or even co-develop their tech. The primary driver is cost. They couldn't care less who developed the tech if it saves them enough money (or brings in more money, if it's a saleable feature). Tesla is the only company that insists on reinventing everything from scratch, even at the cost of grossly overpaying.