"You don't win the Tour de France by riding a bike that normal
people acquire at a bike shop. You have custom-made aerodynamic
machines, and in the case of Armstrong, his bikes are made by Trek
Bicycle Corp, which is based in Waterloo, Wisconsin.
"Trek had been using some white box Opteron-based workstations,
running both Windows and Linux, to design their bikes. The
computer-aided design programs Trek uses are Alias Wavefront and
SolidWorks Studio, which run on Windows; and the company also uses
computational fluid dynamics and finite element analysis programs
to test the aerodynamic properties of the bike and rider after the
design is done..."