Here's a recent article on the sub-industries that insure PV against hail, and predict and protect from hail:

https://reneweconomy.com.au/as-giant-hailstones-hit-the-suns...

Apparently in Australia climate change is making the hail bigger and more frequent.

You can't move the car protecting ones generally so it just comes down to making them tough and knowing your local weather, plus insurance.

Maybe the car insurance companies will cut you a check if you take the hit for them?