Is the rumored little roadster from BMW on track for a 2011 debut? Auto Motor und Sport seems to think so. They even have a rendering by renowned artist Mark Stehrenberger to prove it. If we are to believe the rumors, the BMW Z2 should be closer to what the original Z3 was. That is, more of an entry level roadster to compete with the premium versions of the Mazda MX-5, compared to the more upscale Z4 that just debuted, which is more of a Porsche Boxster rival.