[zephjc]

I want to clarify that I find self-driving cars an amazing engineering achievement and will almost certainly make roads safer. However, I would almost certainly spend the extra 90 minutes a day in a self-driving car catching up on sleep, assuming the auto-drive was reliable enough to not need human oversight in case of emergency. And this doesn't even address the pollution issue from excess driving.

Also, there is plenty of evidence that sitting and driving, instead of walking, affects obesity rates:

http://www.cbc.ca/news/canada/calgary/more-time-driving-incr...