With Olympians onboard, bus driver gets lost for four hours in traffic-snarled London

Even in the most confusing cities to navigate, a traveler can usually count on his bus driver to know the way around town, but that was not true for American hurdler Kerron Clement.

On Sunday in London, athletes started to arrive for the Games. Though London expected the visitors, traffic was still snarled around the airport. Two-time medalist Clement tweeted about the troubles from his bus.

Never a good way to start the Olympic trip, but as visitors continue to descend upon the city, expect more tales of lost bus drivers and bad traffic. It's part of the package when the Olympics come to town.

Related video:

More Olympic coverage from Yahoo!:
• Aborigine athlete threatens boycott amid claims of racism
• Martin Rogers: Looking at the Olympic events the U.S. has never won
• Why women tend to prefer the Olympics over other televised sports