Think that Audi can tackle the BMW X3 with a convertible? Nah, Audi doesn’t either. But its Los Angeles show concept, the Cross Cabriolet, looks to be a hint at the five-door 2009 Q5. Like this concept, the Q5 will ride on the A4/S5′s longitudinal-engine, “transmission-forward” platform. Concept engine is a 240-horsepower, 369 pound-foot longitudinally [...]