Webvan maintained inventory/warehouses. The modern equivalent is Amazon Fresh ( http://fresh.amazon.com/ http://fresh.amazon.com/ ). Instacart is more like a

Webvan maintained inventory/warehouses. The modern equivalent is Amazon Fresh ( http://fresh.amazon.com/ http://fresh.amazon.com/ ). Instacart is more like an Exec/Taskrabbit model. Their inventory/warehouse is your local grocery store. They pay drivers to go grab stuff there and bring it to you. So not terribly different in value prop, but pretty wildly different in terms of business model.