Actually....POA dies with the person. Then, the appointed executor/administrator has legal power to act in closing out the deceased person's affairs. If the estate is closed, then no one has legal power to act on the grandfather's behalf. OP says that the estate has been closed. When the estate was closed, somebody inherited that vehicle, title transfer or not...it no longer belonged to the grandfather, or the estate.
I did not stay at a Holiday Inn Express last night, but have been thru the process.
