Audi has revealed the latest Hybrid Sport Quattro concept, an update of the conventionally-engined 2010 Quattro concept. That developed 402 BHP from a five-cylinder engine, a reminder of the original Quattro, but this plug-in Hybrid concept mates a bi-turbo V8 with an electric motor and liquid-cooled Lithium Ion battery pack to produce 690 BHP and 590 lb/ft of torque. Will Audi put it into production? No news yet
