Yes, I am joking, at least a little, but they will run at least a part of the house for several days. If you want greater capacity, than the Ford F-150 Lightning, or Chevy Silverado EV, which has almost double the battery as the cars. Each car has a battery equal to roughly 6 Tesla power walls, so they can maintain power for a few days if you limit the load (refrigerators, maybe the heater for a few hours a day, lights and your personal electronics for the family).

Of course, the rest of the time you use it as a car. You can pick up these cars used for around $30K with low mileage. They even can plug directly into panels, wired into your home, where you've picked which areas/appliances get power; so when the power goes out it is a quick matter to just plug the car into the panel.

There is a thread on the Kia EV forums where a person talks about his experience using his EV6 during Hurricane Helene. https://www.kiaevforums.com/threads/ev6-and-hurricane-helene.12746/?post_id=167053&nested_view=1&sortby=oldest#post-167053