While I think it's a good idea I just don't see this happening in the majority of the US other then major cities. In my state I just don't see how it would be possible given people commute 30+ miles regularly.
After that, just copy the playbook from the Netherlands. Amsterdam was very much like most big American cities until the 70s, their streets were steadily being redesigned for human scale and less car dependency.
It can be done and it can be done easily if Americans stop believing in their Exceptionalism.
Do watch the videos, especially the "Strong Towns" series about the issue of how the rich suburbs are actually subsidized by poorer people living in bankrupt city centers. The only "straightforward" path for this to change is by getting younger people to participate a lot more on town hall meetings and to get their city councils on board with change. The status quo benefits and has no interest in doing that.
The Netherlands has a ridiculously dense population and is completely flat.
It's only a good model for other places with a ridiculous population density and pancake-flat geography.
You couldn't apply the Netherlands model to, for example, Scotland.
Electric bikes are too slow and inefficient, and require expensive hard-to-make components that depend on conflict minerals.