Inside London's new $25B 'Super Tube'
by from CNN.com - RSS Channel - App International Edition on (#5XC7M)
Your flight takes off from London's Heathrow Airport in three hours, but you're still in a meeting on the other side of the city, in a Canary Wharf skyscraper. There's no way you'll make it by public transport and traffic makes the taxi option even less appealing. How are you going to make that plane?