In the case of the US, it's really an infrastructure issue. Attitudes follow from that. I grew up in the US and live in Europe now, and I bike or walk everywhe

In the case of the US, it's really an infrastructure issue. Attitudes follow from that. I grew up in the US and live in Europe now, and I bike or walk everywhere. The difference is of course staggering. Here, biking is just something ordinary people do to get around, and it doesn't require any special equipment or make any kind of statement. In the US, biking is primarily associated with recreation and a specific subculture. In the US case, changing infrastructure priorities and urban planning practices will go a long way toward alleviating the problem.