alt Hacker News> To put it crudely, having someone in a Sprinter van deliver a recently-purchased toothbrush to your doorstep is simply not a universalizable action, from either a business or logistical standpoint. It is a modern feat that Amazon is capable of doing this, but that it can be done does not mean that it should, nor even that it can be done writ large. For most consumption, it is far more efficient for people to handle the “last-mile delivery” themselves by going to stores and buying a good amount of stuff when they do so.
When you order your X, a van doesn't drive from Amazon's warehouse to your home and then back with only your order. The van takes a van-full (hopefully) from the warehouse, and makes many stops at many homes, businesses, etc.
That seems more efficient, in terms of fuel, climate impact, etc., than each customer making a separate round trip. Is there data showing it either way?
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Also this argument is easily refuted by the US Postal Service, which physically delivers individual pieces of paper in a few days, for pennies.
I would expect Amazon to be more efficient. Besides the round trips, there's operating the store, putting items on display, all that. As I said above, Amazon and Costco don't compete so directly though, like you aren't buying a pie from Amazon.
There's also the externalities. Costco effectively supports car infested surburbia which lots of people blame for a great many problems.
Indeed true. Even more efficient is when people can wait a few days and let Amazon bundle your orders and deliver on a designated day.
That said people don’t typically get in a car to buy one thing -though obviously sometimes they do. On average though their trips will be for multiple things. I still think even without using designated delivery days Amazon deliveries are more efficient than individuals going out to buy things independently.
Here's one study sort that answers your question
https://news.umich.edu/carbon-emissions-and-grocery-shopping...
In-store pickup using a internal combustion engined vehicle produced more emissions than any other option studied.