1. A system comprising: a local social media context server aboard a vehicle, the local social media context server comprising logic to implement a local social media context for a passenger aboard the vehicle, the local social media context being configured with a local social media context duration commensurate with a trip duration for a trip by the passenger aboard the vehicle; logic to form the local social media context around content crowd-sourced from a network portal prior to commencement of the trip; an antenna coupled to the local social media context server; logic to promote aboard the vehicle from a network external to the vehicle, via the antenna, a configurable subset of a global social media context for the passenger aboard the vehicle; logic to overlay content of the local social media context onto a display comprising the global social media context; and logic to configure a merge set of the local social media context and to cause the merge set of the local social media context to merge into the global social media context at a conclusion of the trip by the passenger aboard the vehicle.