The M1 follow-up is far from being a direct successor since the mid-engined coupe has been completely transformed into a plug-in hybrid SUV. At about 2,700 kilograms (5,952 pounds), the heaviest car BMW will ever make is also going to be the most controversial (to date) in terms of design. The luxobarge is debuting in production guise later this year, but recent spy shots of a barely disguised prototype have largely revealed the wild exterior.
