Prius and Leaf cars, any of the battery power cars require TONS more energy than solar will provide, not gonna get it off the grid without being Drilled for Fuel Produced or Fossil. The batteries use Lithium and require Severe mining with MILLIONS of tons of waste and waste water, about as dirty as it gets.
It's all about the perception of being green. New community here all homes are "net zero", many won't even have natural gas in them, even though that's how 99.99% of homes are heated because it gets to -40 and electric won't cut it. But the subdivision has a 8" high pressure gas line to heat the water to send to the homes to help heat them, other then that just electric heat. But since the gas isn't used by the homes, it doesn't count towards their emissions. So stupid, and most likely going to cost homeowners a fortune trying to keep warm with electric.