Street vendors have traditionally played a role in defining the urban environment, often reflecting the social and cultural particularities of a city. Knife-sharpening in India, gas refills in Africa, fake Gucci bags in Paris, and chair massages in New York City are some of today’s examples. Mouna Andraos brings another service to the contemporary city with Power Cart, a mobile unit that delivers a quick recharge for urban dwellers’ mobile devices. With sustainability in mind, Power Cart derives its energy from solar cells and hand-operated crank power. Power Cart was designed to be easily assembled by anyone using off-the-shelf pieces. Detailed instructions are available on her website www. livingwithourtime.com.