BMW obviously has a long-term plug-in vehicle plan. Like megacity long. First hinted at in 2008 and finally announced in 2009, the Bavarian's EV march has gone through the MINI E, the ActiveE, and then the i3 and i8. There's got to be a detailed timeline chart taped to an office wall in Munich somewhere that we would love to get a glimpse of, but instead we just get bits and pieces of where BMW's going next. At least now know the next phase: iPerformance.