Let us step back from our passion for bikes as a means of social transformation and environmental salvation, just for a bit, and look at the tremendous impact that transportation has on our lives. Late 20^th century transportation, dominated by fossil fuel powered vehicles, was a marvel of speed and power. But not efficiency or equity. Because oil was cheap and plentiful, we built transportation systems that ignored economics. Now that oil is becoming scarcer and more expensive to mine--and the world’s population has expanded to 7 billion persons--we have to begin accounting for the true costs of transportation based on petroleum.

On the eve of the much expected Open Streets season in North America, where dozens of initiatives will be celebrated this summer, and after a particularly encouraging beginning of the year in Latin America where Ciclovias have gained significant political territory, it might seem silly to ask, will Open Streets last?