I was driving my uncle's vehicle 2 other cars crashed and one spun out of control and hit me I was not on my uncle's policy so the other insurance denied my case is this true?

I was driving my uncle's vehicle 2 other cars crashed and one spun out of control and hit me I was not on my uncle's policy so the other insurance denied my case is this true?
This is false, unless you were explicitly named as an uninsured on the policy, you are insured. The policy follows the vehicle, not the driver. This is True in California at least...