A few people I know have this plan! I know a few who also think the veggie patch at the community garden would be enough
I think for real sustainability you need some land. High density is presented as the green way but it wont be. Electric cars and telecommuting might change that view over time.
Don`t know if many could afford to buy two or if its even desirable for society for many people to purchase two as it drives down the home ownership rate on aggregate. Definitely agree on the battery pack though!
I really REALLY REALLY don’t want to be working at 70. I don’t really want to be working much past mid 60s, less if my health becomes anything like my fathers.