Ask Mini Cooper dealers how the luxury subcompact market is right now and they'll probably tell you it's slow right now…because they sold their entire year's allotment in August. Audi wants in, and with the 60-plus-miles-per-gallon Audi A1 Sportback Concept, it looks like it has a winner coming. The biggest unknown right now is if the Audi A1 actually has a chance of making it to the United States, often deprived of Europe's best fuel savers.