Although I am neither a vegan nor a vegetarian, I'm always on the lookout for non-meat options at street food stalls. Some tacos de guidados stands offer rajas con crema, calabacitas, or chiles rellenos, but in general, it's the carnivores who reign in Mexico City. So I was intrigued when I noticed a little white stand at a corner near my house with the sign 'Vegana Taqueria'. I've been several times now, and have noticed the crowds growing each time. Oddy, all their tacos are named after meat (chorizo de soya, trigo al pastor, etc.), and with all the toppings provided, you might have a hard time telling the difference. I did notice they use quite a bit of oil in the preparation, so I'm not sure how healthy these guys are, but they sure taste good.
Vegana Taqueria is located on Calle Manzanillo near the corner of Chipas in Colonia Roma (one block from the Sears store, half a block from Insurgentes). Here's a link on google maps:
Open 6:30PM until midnight daily