[dredmorbius]

I'm strongly in favour of e-bikes, they're a highly appropriate solution.

They don't suit all needs, however. The elderly, young, disabled, or ill, for example. There are circumstances in which transit fits needs better, particularly for longer-distance or high-volume commutes. Bikes need less parking space than cars, but still require parking. Bike-share or similar solutions only partially address this given high-demand peaks and low-demand troughs. Weather and geography work against bikes in many places, electrified or not.

Low-headway rail, trams, and busses are still one of the most effective means of moving large numbers of people and baggage over intermediate distances.

And again, all of these benefit from density.