12. BMW's storied M1 supercar was supposed to be built by Lamborghini
BMW and Lambo agreed in the 1970s to build a race car. The Germans were supposed to provide the engine and some suspension bits, and the Italians were slated for the rest of the mid-engined beauty, penned by the incomparable Giugiaro.
At the eleventh hour, ostensibly for financial reasons, Lamborghini pulled out in one of the biggest that's what she said moments in corporate history. BMW cleaned itself off, went back to Germany, had private coachbuilder Baur handle Lambo's part, and the original BMW M car was born.