ZPost caught a new BMW Roadster on testing. This new model from BMW might be the next Z9 or Z6 that will debut in 2010. Some people also say this might be the next generation Z4, but from the spy photos you can see that the model is much larger than the current Z4. This new model is considered to be a competitor for the Mercedes SL-Class.

The new Roadster will be powered by a V-10 engine used on the M Group. If it is the Z9 it will not have a tapered rear end–something that was seen as beloved part of the Z8. The trunk will have grow in order to accomodate the Z9’s retractable hardtop.