There is a futuristic theme in logistics that envisions humans or cargo to be shipped in "pods". This is in contrast to the more efficient way of shipping humans or cargo in larger vehicles like trains or busses.
These pod-ideas inevitable run into some bottle-necks or have to make trade-offs that in the end give them so much lower efficiency than the "traditional" way which is already the (almost) optimal solution to a given problem.
Examples of this are various incarnations of hyperloop, that do not actually solve all real-world problems existing solutions have to deal with, but rather only a subset of them - but they are better at this subset plus they look fancy in their renderings.
This makes it so these impractical solutions get a lot of hype, and money is spent on prototypes, but there is a lot of hot air and little substance.