It will come as a horrible shock to the driver of the pale green Infiniti QX56, but the 2-ton-plus full-size sport utility vehicle is not actually a hybrid. Nor, for that matter, is a Volkswagen Passat TDI--though it at least has a diesel engine, which gives higher gas mileage than the QX56's dismal 14 mpg city, 20 mpg highway. The misbehavior...
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