Prices at the pump added a penny overnight to rise to $2.512, according to auto club AAA, Wright Express and Oil Price Information Service. Prices are 8.8 cents higher than a week ago and 45.1 cents higher than a month ago, but remain $1.463 below year-ago prices. Overall demand remains very weak. The number of miles driven collectively by Americans dropped another 3.1 billion miles in March, compared with the same time last year, the Federal Highway Administration said. That continues a trend that began more than a year ago. The lack of broader, fundamental support hasn't stopped momentum from building in energy markets. "I don't believe in it ... but I'm not dumb enough to stand in front of it," oil trader and analyst Stephen Schork said of the rally. In other Nymex trading, gasoline for June delivery rose 1.4 cents to $1.91 a gallon and heating oil gained 5.8 cents to $1.7364 a gallon. Natural gas for June delivery jumped 19.6 cents to $4.03 per 1,000 cubic feet. In London, Brent prices rose $1.36 to $66.88 a barrel on the ICE Futures exchange.