RICHMOND, Va.--(BUSINESS WIRE)--CarMax, Inc. (NYSE:KMX) today reported record results for the first quarter ended May 31, 2015. Net sales and operating revenues increased 7.1% to $4.01 billion. Used unit sales in comparable stores increased 4.9%. Total used unit sales rose 9.3%. Total wholesale unit sales increased 4.7%. CarMax Auto Finance (CAF) income increased 15.3% to $109.1 million. Net earnings grew 7.3% to $182.0 million. Net earnings per diluted share rose 13.2% to $0.86. “We had anothe