The 401k is exempt or protected from being garnished, so they can't take that. In theory, if you are sued for more than your insurance coverage and lose but cannot pay, they could look to put liens on your house or "execute on" the cars; however, the mortgages and the car financing take priority over (supercede) any later liens or other attempts to get payment out of the property, which means that unless there is substantial equity over and above the loan value, there is no point to them doing that--they won't get anything, since the mortgages or car loans have to be paid first  before they could collect.