I see lots of these Rivian vans when I drive to work through a light industrial section near major Boeing facilities. This kind of local, stop and go delivery service is a perfect use case for EVs. Very similar to postal delivery which also cries out for EVs.
This is in the SoDo area south of Seattle. I'm guessing that Amazon has a fulfillment center somewhere around there due to the density of Amazon vans I see on that road.