U.S. auto sales dropped to a 15-year low in June, as consumers shunned trucks and SUVs and automakers were unable to meet demand for smaller cars and hybrids. GM posted an 8 percent drop in sales, avoiding losing its no. 1 seller ranking to Toyota, which saw a 21 percent drop in June sales. Ford sales dropped 28 percent and Chrysler sales, 36 percent. Honda reported a 1 percent gain. (Reuters)