At this point you have to consider the thing &#x27;Karunamon pointed out upthread. If, for some reason, you <i>can&#x27;t</i> go full-self-driving and such system is safer on aggregate than having humans drive, then it&#x27;s a good idea to implement it, even if suddenly handing over control once a month is an incredibly dangerous prospect (because with such timespans, the human will not really be expecting to drive and their skills will have atrophied).