Had a similar debate with my girlfriend when she suggested Amazon would take over their entire delivery process. Warehouse to warehouse, and warehouse to major

Had a similar debate with my girlfriend when she suggested Amazon would take over their entire delivery process. Warehouse to warehouse, and warehouse to major city don't really seem like they would be a problem. The middle-of-nowhere deliveries would cause the most headaches, and be the least cost-effective. I guess the question is how much of their total deliveries do those comprise of.