Another thing that seems wrong is that the backup drivers are on their own. Anyone who's done night time guard duty will know how hard it can be to stay awake,

Another thing that seems wrong is that the backup drivers are on their own. Anyone who's done night time guard duty will know how hard it can be to stay awake, let alone maintain attention. It would make so much sense t have a backup driver and co-backup driver (and maybe allow neither a smart phone).