General Motors Co told Wall Street on Thursday that its recovery is gathering momentum with improving margins, strong brands, new markets for high-tech vehicles, and prospects for stronger profits in coming years. The No. 1 U.S. automaker said it is targeting an increase in earnings per share to between $5 and $5.50 per share before items, from the $4.50 per share that Wall Street analysts expect for this year. GM earned $3.05 per share in 2014 before items.