Firstly, It was originally conceived as a joint venture between Lamborghini and BMW. Secondly, It was being designed for group 4 racing. Yes, amazing it is right but as fate had decided "Lamborghini found itself in financial straits and the fellows up in Munich were thus left to finish the M1 on their own. What resulted was a Giugiaro-designed, mid-engined marvel that ended up being the fastest production car of its time." But as the saying goes "Fine, we'll do it ourselves", Mercedes did not back down despite the hurdles and here we have today with M1!