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.
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.