[petra]

OK, let's talk about interface. The major problem such interface has to solve - is how keep the driver aware enough of the road at times he needs to(legally, at all times) , while making it more FUN for him than regular driving, otherwise, why bother ?

That's why i believe entertainment in some form, is critical.

So maybe that siri personality is also built in such a way to enable all-time awareness by the driver, effortlessly ?

Or another option: maybe they use some kind of brain monitoring machine like eeg, and together with music put you in some kind of meditative state fit for driving, yet very enjoyable ? but doing so in a subtle way ?

[abalone]

10X safer and/or less stressful would be more than sufficient to revolutionize cars. I think the notion that the only thing you can improve on is fun/entertainment is kind of stuck in traditional car thinking. Making cars safer and more convenient via autopilot features is where you get a 10X leap.

I doubt there will be anything like a "meditative state" -- that's dangerous. On the contrary a goal of the UI would be to keep the driver highly engaged with the vehicle computer at all times.