Updated: The 2013 NAIAS will be remembered for a lot of things. The debuts of both the Lexus IS and Infiniti Q50 – both serious 3 Series competitors. The updated NSX concept and the Audi RS7. And of course that fiberglass superhero the C7 Corvette Stingray.

But for BMW it was a major show for both production and concept cars. BMWi was well represented with the i3 coupe concept and the i8 spyder. On the production front we had the Z4 LCI and the 320i debut along with the US unveiling of the 3 Series touring. But the car that stole the show (at least on BMW ‘s side of the floor) had to be the new 4 Series Concept.

What was it like to roam the show floor? Click through to the full 200 image gallery to find out.