The snake charger has often been seen as a silly extravagance if it's thought of as an amenity for a Tesla owner's garage. Instead it might be a solution to critical bottleneck in operating autonomous fleets. Snake chargers would allow Tesla's to charge themselves without human involvement when directed. All that's really needed to deploy an autonomous fleet in a city would be scattered snake chargers (which might also serve Tesla owners). Before any fully autonomous fleets exist, I'm guessing Tesla will deploy the same tech to make Supercharger queues more efficient and to allow urban parking garages to charge Tesla's without installing dedicated chargers for each space. At Superchargers, Snake chargers and a software update Charger Valet Mode would let users park anywhere on the lot and go about their business. The software would know each cars place in the queue and move it to the charger when appropriate. When done, the car would move away from the charger opening it for the next car and notify it's owners phone. In urban parking garages there could be a few Tesla chargers in an out of the way area. Teslas staying in the garage could move themselves to the chargers and back to assigned parking in Charger Valet Mode. This sort of arrangement could be very important to Tesla owners in urban settings that don't have a personal garage. Since most Superchargers and urban garages are private property, these updates are plausible within current legal limits of autopilot and are just an extension of the summon mode.