I'm familiar with the RFC. The (sad?) thing is, I'm being serious. If you use autonomous drones they could drop the drive into a receptacle for upload, and scootch over to pick up a drive going the other way (if needed). Whenever the drone needs to recharge, it drinks power from a landing area.
This is no a widely applicable data transmission method, but for the people that need it, they would really need it. Data sizes grow larger, but running fiber through cities is time-consuming and expensive. This would be a reasonable alternative.
There are limits, of course, on the kind of data you'd want to transmit in this way, since it would be fairly easy to intercept. OTOH it is more secure since interception is trivially detectable. So "vast amounts of data, relatively short distances, where detecting interception is more important than preventing it". Sounds like a viable niche to me!