"Tesla joins Nissan Leaf and Chevy Volt in the race for electric car sales. After a recording-breaking March for the Nissan Leaf, sales of electric cars dipped in April."

"President Obama plans to nominate Charlotte Mayor Anthony Foxx to serve as transportation secretary, a White House official said Sunday."

"MAYFLOWER, Ark. -- An ExxonMobil pipeline that ruptured and spilled thousands of barrels of oil in central Arkansas last week highlights the need for pipeline maintenance, inspections and safety standards, the state's attorney general said Wednesday."

"If the Obama administration has its way, $2 billion in new revenue from offshore oil drilling will fund research into how to wean American drivers off imported oil."

"SACRAMENTO -- Nearly five years after Peninsula cities first sued to block California's high-speed train from running along the Caltrain corridor, a judge has dismissed the case in a long-awaited victory for bullet train backers."

"Little more than a year after making it to the top of IBM's list of worst commuter cities, Mexico City has returned to the urban transit spotlight -- this time at the receiving end of international praise."

"Tesla Motors and The New York Times are at odds over one reporter's account of an ill-fated winter test drive of the Model S electric car. Many blame winter, but Tesla Motors blames gross inaccuracies in the Times report."

"BRUSSELS -- The 'Type 2  plug developed by the German company Mennekes will be the common standard for charging electrified vehicles across the European Union, the European Commission has announced."

"Last fall, when Democrats and Republicans seemed unable to agree on anything, one bill glided through Congress with broad bipartisan support and won a quick signature from President Obama: the European Union Emissions Trading Scheme Prohibition Act of 2011."

"Shipping companies are making a case to Congress for more money to dredge Great Lakes ports and waterways. With water levels near a record low, ports are losing the battle against sediment."

"There are few new EVs, but plenty of performance cars -- with eco mode. Yes, it's possible to drive a rip-roaring V-8 Corvette and get nearly 30 mpg."

"Bicycles, pedestrian-friendly plazas and walkways, new bus lines, and parking meters are combining to transform parts of Mexico City from a traffic nightmare to a commuter's paradise. The Mexican capital, one of the world's most populated urban areas, has captured this year's Sustainable Transport Award, the Institute for Transportation and Development Policy (ITDP) announced Tuesday."

"A storm moving up the Mississippi River valley will help replenish the river, low in parts from drought, and ease concerns that shipping could be halted along a shallow stretch from St. Louis to Cairo, Illinois."

"BILLINGS, Mont. -- Opponents of a railroad that would open Montana's coal fields to new mining have asked federal officials to halt their review of the proposal, alleging it would be much larger than disclosed with impacts stretching to the West Coast."

"HONG KONG — China began service Wednesday morning on the world’s longest high-speed rail line, covering a distance in eight hours that is about equal to that from New York to Key West, Florida, or from London across Europe to Belgrade."