[Scoundreller]

Would be cool if the driver had to placebo-drive and the car used that input to assess discrepancies and validate confidence.

When the driver fails to do a task that the computer seems necessary with a high degree of confidence, both get shutdown for further evaluation.

[TeMPOraL]

I don't think that would work. Driving is not a fully conscious, deliberate see-analyze-act loop. A lot of your control movements are subconscious, and you expect instant, correct feedback from the vehicle. To see what I mean - if you've ever played a racing game, try opening a racing replay/Let's play video on YouTube, pretend for a while that you're in control (use your WASD keys), and see how your brain complains about your inputs having no impact on reality.