In the US it can even vary by state. Dying without a will or transfer on death assets can be a nightmare for the deceased family. My father died without a will and my mother and I spent a year jumping through hoops and dealing with lawyers trying to get everything straightened out.
I encourage everyone to take a look at their local laws related to the subject. You may be surprised at how things would work out without some planning on your part.
The DMV and the post office(if you submitted am address change) are the most likely offenders.