I think this is going to be very difficult in much of the US, to be honest, simply because of the density of settlement. European towns and cities have been con

I think this is going to be very difficult in much of the US, to be honest, simply because of the density of settlement. European towns and cities have been constrained by their historic footprint, and the car has been clumsily imposed on that, but most of the US has been built from scratch around the car. You cannot serve low-density suburbs, built for cars, using bikes or public transport, the people need to move or the houses need to be redeveloped at a higher density. Although, one of the interesting things about the US is that a lot of the population of cities lives outside the city jurisdiction, for a variety of reasons including tax avoidance. The people who actually need to be persuaded aren't the people who drive into the city from the suburbs every day, they are the people who live inside the actual city, and those people need to make a judgment whether the benefits outweigh the drawbacks of this kind of approach (the risk being that the suburbs will simply develop new centres and bypass the city).