At its most sedate settings in freeway trafic, the M6 is so comfortable that my passenger falls asleep almost immediately.Then, without realizing it, I exceed a pre-set speed (90 mph in this case) and set off a loud chime. This car wants to fly. Push a few buttons to adjust horsepower, transmission, suspension and steering and the highway cruiser becomes a taut road-hugging muscle car that makes challenging roads seem way too easy. Almost everything is software controlled and adjustable. Much of it by voice command in case you are too busy driving to push buttons. More good news.The EPA predicts 12-18 mpg. My M6 averages 18.5 mpg overall with one 800 mile road trip yielding 19.5 mpg.
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