[TheCoelacanth]

You're describing places that have few people and hence few car trips. Most car trips, even in the US, take place in densely populated areas.

The point of public transit isn't to handle 100% of all trips. It's to handle the most common trips in a more efficient and scalable way.

[oklahomasports]

Saying most car trips take place in densely populated areas in the US is a lie

[TheCoelacanth]

That depends how you define "densely populated", but certainly most car trips are near where people live and work, not in wilderness camping areas you are describing.