Are you sure they weren't CF seatposts covered with faux-Aluminium stickers?

[edit] Sorry berny, I haven't noticed a single thing about anyone's bike. The two main things that I've noticed is that the Discovery team look puncy in that stupid blue and Ivan Basso and Cadel Evans look like identical twins through a sleep haze. I don't know how many times I've 'found' Cadel Evans in the pack slogging it out on a climb for the CSC team