The battle of the used-car chains heats up with Boston agency Hill, Holliday, Connors, Cosmopulos' first TV spot for AutoNation USA. The commercial broke last week, kicking off a $40 million multimedia campaign in the 15 markets where AutoNation has stores, mostly in the South and West. With the theme of "We make it easy," the commercial shows the diversity of AutoNation customers, who are attracted by such features as no-haggle pricing and a 99-day warranty. Copywriter: Joe Berkeley. Art director: Dick Pantano.