One of the (few) disappointments at this year’s Paris auto show was the absence of BMW’s 1 Series M coupe.Industry pundits and M-car fans alike expected the smallest M-division product yet to make its public debut at the world’s oldest auto show. It didn't happen.BMW did bring its new baby M-car along to Paris, though clandestinely positioning it at key Parisian landmarks for a series of (not so) revealing images.Seeing as the world-famous fashion week was opening in parallel to the 2010 auto show, it did make for a rather clever marketing stunt for BMW. Don't call it M1...Although the 1 Series M always had most of its car cover in position during its Paris cityscape model shoot the teaser images did reveal some of the car’s styling details. Immediately noticeably are the large M-division alloys (occupying flared wheel arches) which sit generously apart from each other at the rear, illustrating the 1 Series M’s wider track. The rear three-quarter images also reveal a set of quad exhausts underscored by a functional diffuser. Slightly shy after not being allowed to attend the Paris auto salon, 1 Series M modelled only a passing fraction of its front styling, amounting to a duct-tape disguised headlight and new bumper – the latter featuring a large air intake cut-out. Some of the styling details the 1 Series M kept hidden during its Parisian urban striptease were a new dual air-intake bonnet design, channeling air to a 257kW version of BMW’s legendary N54 3l straight-six engine, and a neat boot-lid spoiler.BMW is expected to (finally) debut its 1 Series M-car at the january 2011 Detroit auto show. It may be the first 1 Series M-car but you know it would be rather inappropriate to call it M1 - considering the BMW family tree.