Lance Armstrong's Discovery Channel take part in training ahead of the 67.5km team time trial from Tours to Blois Cycling fans line the route as the publicity cavalcade passes through ahead of the fourth stage of the Tour de France The Spanish Euskaltel-Euskadi team are the first to finish the time trial in a time of 1hr 14mins 38.48secs French team AG2R pass through the countryside - eventually finishing one minute and 24 seconds behind Euskaltel Armstrong leads Discovery home in 1hr 10mins 40secs - 34 seconds ahead of Jan Ullrich's T-Mobile team in second Yellow jersey holder David Zabriskie takes a tumble in the last 2km - his Team CSC then finish two seconds behind Discovery Armstrong takes the overall leader's yellow jersey after Discovery win stage four in dramatic fashion Armstrong celebrates with his girlfriend Sheryl Crow and is now 55 seconds clear of second-placed George Hincapie
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