2011 was a fascinating year to follow auto sales. With the overall market up over 10%, and hot new products hitting showrooms, there was definitely room to grow… and yet everyone seems to have an excuse for why growth wasn’t stronger. Japanese automakers, the biggest losers of 2011, had a strong of natural disasters to blame the bad year on. Detroit showed strong volume gains in terms of percentage growth, and earned respect in growing segments where they were previously weak, but couldn’t match the expectations of its perennially over-optimistic boosters. The Korean manufacturers showed strong market share growth but lack of capacity prevented them from bounding into the top tier of the US sales game. In fact, only the European luxury manufacturers could point to 2011′s sales performance with unalloyed satisfaction, as they grew some 29.5% as a group, from an already-strong volume position. So, given these mixed results, what was the lesson of 2011?