BOSTON, Sep 15, 2015 (BUSINESS WIRE) --CarMax, Inc. KMX, +3.70% the nation’s largest retailer of used cars, today announced a new partnership with the National Football League’s reigning Super Bowl champion New England Patriots. As part of the multi-year sponsorship agreement, CarMax is now the official used car retailer of the team and will be visible to fans and consumers through extensive branding within Gillette Stadium and the surrounding footprint, as well as media, digital and social elements throughout the 2015 season. The company will also be honoring local community heroes and donating $80,000 to area nonprofits through a consumer contest called The Bright Side of Game Day.