I think this is part and parcel of Tesla's ongoing mission. A completely revolutionary way to reduce grid dependence.
I don't see any need to reduce grid dependence, and I don't really consider it part of Tesla's mission. The need is to switch to clean and sustainable energy, whether that involves the grid or not.
In general, I think utilities are a good thing. Public sewer, water, power, police and fire protection, even the Internet. These are all services I don't want to have to maintain myself. Power needs to be cleaned up, but that could easily be done at the utility scale. I consider it unfortunate that power utilities and regulations are not moving on this need to where people feel it is necessary, myself included, to act on our own and install rooftop solar. We'll do it if we have to, but distributed power generation is not the end objective; clean sustainable power is the end objective. That was the distinction I was trying to emphasize, anyway.Dependency on the grid is dependency on utilities, and the utilities stand in the way of the mission of sustainable energy and sales of BEVs. Solar can be a way to drive down prices.