Engadget - CeBIT isn't an auto show in the traditional sense, but we are in Germany after all, so we weren't terribly surprised to see Audi roll up with a brand new car. The latest A3 made its worldwide debut today, bringing with it that wheel-based menu navigation interface we saw in its prototype phase. The touchpad sits atop the jog-wheel and shrinks things down considerably compared to the original version found in the 7-series.