I'd like to understand more of what "and you're screwed.." actually means. What DOES California do to uninsured motorists?

We hear about this all the time but I never seem to hear about the penalties. In another state I had an uninsured motorist hit me and they had to show proof of paid for insurance for the next 3-5 years or risk having all tags (plates)removed from all their cars as well as their driver's license revoked.

Dan