The "sociality" of cycling has broader ramifications for mobility transitions. While infrastructure engineering and other planning efforts may "attract" more cyclists to the roads, we introduce key aspects of the culture of bicycle mobility, which is boosted by social movements like Critical Mass, and organizations including community bike workshops. They respond to particular social needs across race, class and gender, but also create broader "demand" for cycling, through socialization, enlisting new cyclists, lobbying, and bike-friendly actions. The "bikespace", drawing on Lefebvre, forms the "software" that complements, and builds, a cycling culture.