There is a fair bit wrong with this advice.
CA is a joint and several liability state. Joint and several liability is the legal doctrine that each defendant in a personal injury claim may be held responsible for ALL the victim's economic damages. Importantly this can occur if you are fractionally at fault.
You've parked 10 feet off the side of the freeway, 16 feet away from any lane. Someone is going 80 miles an hour, passing cars, then (likely) falls asleep and veers sharply off the road, then along the side of the road and hits your parked truck.
Even though you are fractionally at fault you are on the hook for everything.
From actually seeing cases first hand
1) If you have money
2) you have a connection to an accident however small, particularly a fatal one, and very particularly with any kind of sympathetic angle (wife and children bereaved and at risk of being homeless etc
then you will be named in the lawsuit. And at least in CA - even if the husband was 90% at fault (to a normal person the one who did things wrong). YOU could pay out everything