Workers sit in gondolas as they perform tests on the new cable car link across the River Thames in London, June 17, 2012. The scheme, revealed in July 2010, links the Greenwich Peninsula to the Royal Docks, where the O2 and ExCel respectively will host London 2012 Olympics competitions. [Photo/Agencies]

Workers sit in gondolas as they perform tests on the new cable car link across the River Thames in London, June 17, 2012. [Photo/Agencies]