I really wanted to see solar to hydrogen storage and then a hybrid fuel cell plus battery powerwall. Use all the solar that you get in the morning and not have to burn a battery pack out every 5 to 10 years.

You could do the same with the car, throw a small fuel cell plant in there a couple liters of hydrogen and a decent but not too big battery pack. When you park your car at work or at home it just sits there and slowly charges when you're not paying any attention. If it gets into a true low state or you know you're going to need it the next day to go further you can plug it into your home electric. It's just absolutely reasonable to put enough solar on a lot of houses that you could be completely sufficient from the grid.