The speed is for a human powered vehicle (fully fared). Edit: All the flat records in the section you're referencing are for hpvs, not tradition bicycles, as a look at the pages of the riders will show.
See: https://en.wikipedia.org/wiki/Sebastiaan_Bowier https://en.wikipedia.org/wiki/Barbara_Buatois
The speed is for a human powered vehicle (fully fared). Edit: All the flat records in the section you're referencing are for hpvs, not tradition bicycles, as a look at the pages of the riders will show.
See: https://en.wikipedia.org/wiki/Sebastiaan_Bowier https://en.wikipedia.org/wiki/Barbara_Buatois