BMW's Z4 Coupe was recently revealed at the Frankfurt motor show. The car received a positive reaction and is expected to hit the showrooms in early 2007.

Testing is already underway on a high performance version though as captured here.

Differences are subtle on this mule with different wheels, a different front spoiler and four exhaust pipes. Power is likely to come from a straight six rather than the V8 destined for the forthcoming M3 replacement.