Answer: When it's a running shoe! Daughter Amber Taylor turned me on to Newton running shoes after she came in at #15 in women in the recent 2013 Big Sur marathon. So, I bought a pair for my short 2 mile jogs. I love the new shoes! More Newton info can be found at their website here.
PS the photo from Big Sur is of a stranger. I just liked the way he color coordinated his shoes with his running outfit.