AUTONATION

(Reuters) - AutoNation Inc , the largest U.S. auto retailer, posted a 15 percent rise in quarterly profit as demand remained strong on the back of an improving economy and low oil prices.

DETROIT (Reuters) - Mike Jackson, chief executive officer of AutoNation, the largest U.S. auto dealer group, said on Wednesday he was bullish on auto sales and the economy in general now that what he called an "epic winter" is over.