The widest and smartest billboard was unveiled today in Piccadilly Circus, London. This Coca-Cola sign even beats the one in Tokyo's Ginza shopping district in size, measuring 99 feet across.
Excerpt from the article:
"This is an intelligent sign, with state-of-the-art computer technology, built-in cameras and an on-board heat sensitive weather station," the Coca-Cola Co. said in a statement.

The sign can respond to weather and movement. "When it's raining, big drops will appear on the screen and when it's breezy, the Coke sign can ripple as if it's being blown by the wind," a spokeswoman for the company said.

It will also be able to recognize if people are waving at it from the ground below and, eventually, will be able to respond to text messages from mobile phones, she said.