With the huge increase of EV's that are set to join the market, automakers have already begun to place technology that will interact with the power grid. The e-tron will be using an EEBUS communication system that will allow it to determine optimal times for charging, allow it to adapt to shifts in demand and avoid grid bottlenecks. Not sure how practical this will be for daily use as most have a given routine. https://www.electronicdesign.com/automotive/nand-keeps-pace-adas-data-storage-requirements