As always it is the human-modulated social questions that are hardest to deal with.
I suspect that car makers might be happy to design such systems into drivers seats and offer them as an optional safety feature that triggers an alarm.
Question is.... how will it be used and by whom? If it's just to alert the driver that they should take a rest, that's fine... but if it's going to be used to spy on people who depend on driving as a livelihood, that's a little creepy.
The Other Tesla David Blaza5 comments I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...