IS there a more distinctive and graceful sedan than the Audi A6? Its modern lines are a perfect complement to its role as an executive luxury saloon. Now, with the 4.2 V8 quattro, Audi has added outstanding performance as well. With 220kW, transmitted via Audi's all-wheel drive system, it is capable of effortless and sustained high-speed travel. Perhaps this is the flagship the A6 range has needed to boost disappointing sales.