> A small car world would be 100% -> 60% resource reduction.

You're missing the part I replied to which was about bikes being usable 11 months of the year. If you need all the car infrastructure for 1 month, plus the bike infrastructure, that makes it overall worse, not better.

But discard that, if biking is a 60% reduction, then a walking+train world would be way more.

Your link talks of a train station building a 12,500 bike-parking garage. For comparison the busiest train station in the UK (Waterloo) has 250,000 people using it every day. Note that the pictured bike parking in Amsterdam takes up the space of two of the large multistorey hotels next to it, just to store metal, but pushes actual walking humans two hotel distances further away from their destination just to walk past unused metal storage.

Bike parking, like car parking, is a non-place in the sense of https://newworldeconomics.com//place-and-non-place/ it's not somewhere anyone wants to go, or a place where anything happens. Scale that bike parking up to 100,000 people and it would be an enormous amount of physical city-center non-place. Now count that you have to park those bikes at both ends of every journey - bike parking at the supermarket, at the clothes shops, at the pubs, at the apartment buildings - and instead of a small, dense, walkable city center, you're now measuring the total area devoted to non-place metal storage in square kilometers, and inconveniencing everyone with kilometers more walking every week just to cross the distances taken up by mega bike park bloat.

This picture is Shinjuku in Tokyo, the world's most populated city, near the world's busiest train station: https://newworldeconomics.com/wp-content/uploads/2017/01/shi... - can you imagine that street being as pleasant with 2,000 bikes barelling down it at 2x walking speed and every one of those eateries having 5-20 bike parking outside?

And there's no chance those 12,500 bikes would fit on the trains, how many bikes fit on a passenger train, maybe 15 or so? Bike+train means most people can only bike on one side of any train journey.

> Public transit would grow (no need to fit all cyclists), but that should actually be a net benefit.

If public transit is growing, more people will be able to not-need bikes.

> To comprehend the difference in scale, view images here [1].

Or you, view images here: https://newworldeconomics.com/what-a-real-train-system-looks... and comparisons here https://newworldeconomics.com/the-problem-with-bicycles/

e.g. [1] "The typical U.S. solution is to surround the train station with acres and acres of free parking.[...] There are 157 acres of land in this photo. When you step off the train, you have immediate walking access to 157 acres of /nothing/"

and [2] "The better solution is to surround the station with all the highest-value property. All the best offices, stores and restaurants are as close to the train station as possible, so we can walk there from the station, and where there is the most pedestrian traffic. Plus, you also try to put as many apartment buildings there as you can, so you can easily walk to the station in less than ten minutes."

"if you want people to be able to live without automobiles, you have to make it easy to get from the train station to wherever you want to go on foot. This means you put all the good stuff right up against the train station — even build it into the train station itself if possible. When you step out of the train station, you want to land right in a wonderful pedestrian Traditional City environment, not a parking lot wasteland."

When you switch a "large" surround of car parking for a "large" surround of bike parking, that doesn't fix anything. I put "large" in quotes because the measure is not abstract meters, dollars, or kilos of concrete, the measure is human size and human footsteps - walking past 12,000 bikes is 90% of people walking further for no benefit, while the bike owners also walk further for a small benefit of part of a journey, and puts desirable city space to use by metal instead of humans.

[1] https://newworldeconomics.com/wp-content/uploads/2009/12/vie...

[2] https://newworldeconomics.com/wp-content/uploads/2009/12/gak...