Which team won the team time trial at Tour de France 2009?

Explanation

The team time trial is a discipline where the riders in a team ride through a stage together. It was very popular in Tour de France in the 1990s and up to 2005. The team time trial made a comeback during Tour de France 2009 and was won by Astana, 18 seconds ahead of Garmin-Slipstream and 40 seconds ahead of Team Saxo Bank. Team Saxo Bank thus defended the yellow jersey, which Fabian Cancellera wore at that time.