Your claim:

> a bike plus adequate space around it is only a bit smaller than a car with adequate space around it.

Here is an example photo from a recent organized bike ride in my city:

https://images.app.goo.gl/S1Nh8d7zqfSEzqmH7

Here is another:

https://images.app.goo.gl/6hh7NAMtEFPZZyKA9

It's quite hard for me to square these images (not to mention my own experiences riding bikes) with your assertion.