Who is in fault if a uninsured car slides down a slope and hits a car parked illegally?

Disclaimer: I am not an attorney. But that seems to be a thing at the discretion of the Judge, all conditions must be considered, and 'illegally parked' could mean anything from an expired meter to blocking the road. And in Calif, if you are uninsured, regardless, you are At Fault because you should not have been on the road. If you rear-end a car at a red light, and that car, just sitting there waiting at the light, is at fault if uninsured. That's why you should carry both uninsured and under- insured on your policy, even when convicted and ordered to pay, they usually don't.