You probably misunderstood what I meant by 'handoff'. It refers to the range of programmed interactions between an automated system and a human, for example, a warning light on the dash is a handoff. A warning sound or an automatic request for user action is a handoff. Pulling over and shutting down is a handoff. You say it's a bad idea. It would be a very very bad idea to build systems that do not have these responses programmed into them. It would be like throwing an exception without any exception handlers.

If you haven't already, I highly recommend listening to the Econ Talk podcast for much more depth from someone who has been thinking about these kind of problems for years (I can't really do it justice in a HN comment).