Bicyycle fairing

Re the current crop of power calculations, I've always wondered why
fairing's were never a popular item for bicycles. With today's
composite materials weight could be minimal and even the crudest drag
calculations show that wind resistance is the most critical factor in
bicycle speed.
See: https://www.racebikemart.com/adverts...1540463758.php
or action pictures at: https://www.youtube.com/watch?v=UpBRkphIwTo

Granted that fairing's would not be legal equipment for racing but the
majority of bike sales are not for racing.


cheers,

John B.