What if Model S's could "jump start" other S's in emergency situations - perhaps from supercharger to supercharger architecture for emergency cases? I think that would be awesome. acpropulsion, the heart of tesla's technology wrote a white paper on how energy from the battery when plugged in could be sold back to a grid at a premium, helping heavily loaded grids (for example cali) and then charge during cheaper times during the day and it can act like sort of a UPS for your home haha. quick charging from S to S should be possible
Some other old, slightly related topics: Use Your EV As a Backup Electricity Source V2G - Vehicle to Grid The 'Smart Grid' Batteries to Power the Grid AAA Plans Electric Vehicle Charger Trucks PGE and Tesla Motors Co-Pilot Vehicle-to-Grid Research