• Ad Age, Thursday, March 13, 2008 11:15 AM

Mark McNabb, senior vice president-sales and marketing for the Nissan and Infiniti brands, resigned unexpectedly yesterday and is believed to be moving to an undisclosed Detroit automaker. He was the top American at Nissan North America and a rising star.

A source says McNabb faced aggressive and unrealistic sales targets from his superiors at Nissan.

McNabb first joined the automaker in 1986, but resigned in fall 2005 and within months joined Mercedes-Benz USA as vice president, marketing. Mercedes-Benz moved him to vice president, sales in January 2007. But McNabb suddenly split in March of that year to rejoin Nissan as the corporate vice president, heading the Infiniti brand's global business. He was promoted three months later to his current position.

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