Originally Posted by
brawlo
Looking at the amount of padding or tape on those top "bars" I'm going to guess it's a bike that was used for long sessions of aero testing. The bars may be to rest the shoulders/chest on so as the position can be dialed in without fatigue affecting it too badly and the rider getting sloppy with position
that's a good hypothesis. the whole bike seems designed around quick changes to position. can't tell about the stem, but it seems like the height of the bars can be easily changed, and the overall reach can be changed with two hex bolts. definitely a lot less work than playing with different bike sizes, changing stems, looking for different angles, etc.