The Soloist concept was first conceived in 2000 when road racers were asking Cervelo if they could apply their aerodynamic timetrial skills to a standard road bike.
Using the Smartwall tubeset to generate a good combination of torsional and bottom bracket stiffness at a reasonable weight the first Soloist was very well received.

Subsequent iterations of the Soloist refined the design to the point where, in 2003, Team CSC decided to use them for their Spring campaign.
The tubeset had by now been updated to Smartwall 2 with its curved, bulge-butted seattube for even better stiffness-to-weight ratio. Specially butted and ovalized toptube with an even sleeker downtube and the industry's most narrow integrated headtube.

Only two years later the victory list is endless and includes: - Liège-Bastogne-Liège, - Paris-Nice (twice),  - Critérium International (twice), - Tour de l'Avénir, - Tour Méditerranéen (twice), - Tour de Qatar, - Bayern Rundfahrt.  Simply put, while the Soloist Team has the technical features, the ride quality and the pedigree to be a very expensive super frame, it is in fact the least expensive way to ride the exact same frame the top pros.
If that isn't reason enough, it also morphs easily and smoothly into a part-time TT/Tri bike, simply by using the Cervélo aero seatpost with flippable head.

Thanks to the logical size distribution customers are almost always able to find their preferred position on a Cervélo. No need for custom frame sizes, and no need for women-specific geometry.