Audio Tech Provides a Comfortable To the Ears 1 mpg Boost

Noise cancellation system also provides GM Crossovers with one of the quietest interiors. 2011 Chevrolet Equinox ? An impressive 32 mpgUS highway thanks to a grocery list of ?sweating the details?. High-end noise-cancelling technology that helps frequent flyers cope with the drone of two or more jet engines just feet from their seats is now helping GMC Terrain and Chevrolet Equinox owners save fuel in a more quiet ie comfortable interior environment.