Re-sharing a massimo tweet (twitter[dot]com/Rainmaker1973/status/1690309652217565185):

A bicycle's performance is extraordinarily efficient

[read more: https://en.wikipedia.org/wiki/Bicycle_performance]

[Chart from S. S. Wilson, Bicycle Technology, Scientific American, 1973: https://cdn.antymateria.com/wp-content/uploads/2020/04/Historia_technika_rowerow_ang.pdf , https://www.scientificamerican.com/article/bicycle-technology/]