Riders of San Francisco's often infuriating Municipal Railway ? known to locals as Muni ? have a new way of expressing their displeasure with service outages, delayed trains and late buses: Tweeting the mayor from MuniFail.com.

Thanks to smart tech, ambitious planners and boatloads of cash, the much-stalled concept actually has a future. But for trains to beat planes and automobiles, the hardware needs to really fly.

Sir Richard rolls out the vessel that will carry well-heeled tourists to sub-orbital space.

On a cold and windy night at the Mojave Air and Space Port, the VSS Enterprise is unveiled to the public. Attached to its mother ship, the vehicle better known as SpaceShipTwo is expected to be the first commercial spacecraft when it enters service with Virgin Galactic.

LOS ANGELES ? EV enthusiasts have been adding extension cords to Prius hybrids for a couple of years now, and Toyota is finally getting in on the act with a plug-in version of the wildly popular hybrid that hits the road later this month.