Fairing

Aerodynamic

source 2020, Bicycling Science, 4th Edition, David Gordon Wilson and Theodor Schmidt, MIT Press

One of the major resistance in mobility is the air resistance. It's following this equation: $F_{A} = \frac{C_{D}*A*V^2}{2}$.
Meaning the small surface $A$ the better

source 2020, Bicycling Science, 4th Edition, David Gordon Wilson and Theodor Schmidt, MIT Press

Here we can see that Human-Power vehicles (velomobile) are much better for that than regular bikes.

Illustrate with car

I used Stable diffusion to change it with a bike and a velomobile.

Computed Aided Fairing

Laser-cutting cardboard glued together with fiberglass.

source mosquito-velomobiles.com