The Brit pub gives up a few teasers about the mid-engine supercar, namely that it won't be called the M1, BMW's plan to fit "heron-wing" doors and a powertrain line-up that will include three engine choices. On that last bit, we'd suspect that the twin-turbo'd 3.0-liter engine would be a suitable entry-level mill, followed by the M3's V8 and the M5/M6's V10, with the latter benefiting from a duo of turbochargers. :thumbsdown: It's all speculation at this point (i hope so for the latter), so we'll have to wait for the July issue to hit UK newsstands tomorrow, with sales in the U.S. beginning later this week.