There's this company that started up here in Texas a couple of years ago called Hail Protector. Here's the web site:
https://www.hailprotector.com/
It's basically a car cover that can be blown up like a balloon in 5 to 10 minutes. It can be plugged into an electrical outlet and run indefinitely, or run off double A batteries for a couple of hours. It comes with a phone app to receive weather alerts 30 minutes in advance of a hail storm in the area, and a remote to trigger it.
It looks goofy when inflated. It looks like an unusually unattractive car cover otherwise. There are lots of videos of it in action, and it seems pretty effective.
Do any of you have experience with it?