We are a nation that faces increasing stress, obesity, gas prices, carbon emissions, traffic jams, and parking fees. Providing federal funding and mandates to expand metropolitan bicycling infrastructures would simultaneously address all these problems, while offering an improvement in the quality of life of a significant portion of the US population.
Surveys might be taken to target high-profile early adopters, as a first phase. But changing our culture is also very much an "if you build it, they will come" proposition. As the benefits become measurable and real, increased emphasis on this alternative for travel will grow, together with the multiple "wins" in the aforementioned areas.