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kubarieton Cycling is more important than electric cars for reaching net-zero cities

My guess is that it's not purely elevation/weather based, but that certainly is a factor for people's comfort. E-bikes can help with the elevation issue at the cost of being more expensive of course.

What's the level of bike infrastructure available? It can be surprising how protected people need to feel from cars to use bikes over other modes of transit. I personally only bike in bike lanes and will avoid sharrows and walk my bike on the sidewalk if there isn't a lane available. My partner will only bike on grade separated paths. This leads to us mostly walking or taking public transit since we're in an urban area, but both of us would gladly bike if we had a good network of bike lanes to do so.

kubarieton Cycling is more important than electric cars for reaching net-zero cities

A more realistic proposal is making your neighborhood slightly denser and more pedestrian/bike/transit friendly. Most of the neighborhood can remain single family homes, but a central area should be slightly denser (3ish story buildings with retail on the bottom floor and residential apartments above). Your major transportation needs can now avoid cars in the following ways:

1. This central area should have a connection to a frequent public transit option which can get you to your job. BRT would be the easiest to roll out, but the ideal for most people would probably be some sort of medium/commuter rail with decent WiFi onboard and enough seating/frequent enough trains so that the average commuter can sit and work if they'd like. Obviously this won't take everyone out of their car, but the majority of commuters in your neighborhood could use this instead since it would be faster and more convenient. Ideally there would be trains/buses running at least every 10 minutes.

2. Because there is a retail area close to your residence you can realistically walk/bike to get groceries and do routine errands. Bike paths in your residential neighborhood make this easier because they feel (and are) much safer for everyday people to use instead of sharing streets with cars. Ideally the paths are safe enough for you to feel comfortable with your elderly relatives or children biking on them.

This is obviously very different from how North American suburbs are set up today and would require a large amount of investment and changes in the way that we do public policy and planning. However, it is certainly possible to have suburbs that are bike/pedestrian friendly if you put the infrastructure in place to do so.