The World's 7 Coolest Floating HotelsFrom retired ocean liners and rock-themed submarines, to tricked-out houseboats and huts tied to inner tubes, here are seven of the world's coolest.
Concept Vehicle Would Whisk Commuters Down LA River 'Subway' Forget the freeways: automotive designers want to get you to work via the Los Angeles River.
Billionaire Richard Branson Plans Deep-Ocean Submarine DivesBillionaire adventurer Richard Branson on Tuesday unveiled a new single-person submarine that he said will be used to set new world records by exploring the five deepest parts of the world's oceans.
