Don't know about other states...
but in NC, your UIM (Uninsured/Underinsured Motorist) coverage will take care of you if you're hit while on your bike and the driver doesn't have insurance or doesn't have enough insurance to cover the injuries. If you file a claim on your policy too (even if the other driver has insurance, but it isn't paying), lots of times you get the funds, and the insurance companies battle it out without your having to wait. The catch is that you have to promptly notify your carrier (I know the court issued a ruling on this, I just haven't read it recently).
I second what others have said - talk to an attorney licensed in your state regarding the best course of action. Doesn't mean you have to get involved in a full blown lawsuit, but it is nice to know what your rights are.
So sorry to hear about your hubby - best wishes to him for a speedy recovery!
Carrie Anne