Photos: On the road with a mapping service

Ever wonder how those all-knowing mapping services get so smart? (I do, particularly when they send me down a barricaded road or on an infamously congested highway.)

Silicon.com's Tim Ferguson wondered too, so he went on a trip outside London with mapping company Tele Atlas as it gathered images and data that eventually end up on numerous navigation devices. Click here for News.com's version of his gallery.