Next time you're at the grocery store, look around. Especially if you're in a city, or a neighborhood with many students, you'll see people shopping with canvas bags, backpacks, baskets, granny carts. These are pedestrians, bikes, and buses of the grocery world.

In the city, you'll find grocery stores that are tight and crowded. The aisles are narrow and people are moving everywhere. But because so many people are coming for quick trips and shopping with space-efficient baskets, it mostly works out.