Maroone has joined AutoNation's board of directors
Maroone, 51, also extended his employment agreement with the publicly held dealership group through 2007.
Maroone joined AutoNation in 1997 when the company acquired his family's Maroone Automotive Group, a privately held chain of dealerships in South Florida. He is one of AutoNation's largest stockholders.
AutoNation of Fort Lauderdale, Fla., ranks No. 1 on the Automotive News list of the top 100 dealership groups in the United States. It reported $19.1 billion in group revenue in 2004, on sales of 410,621 new vehicles. The company has 281 dealerships.