Well our C-Max windshield needs replaced again - about 14 months after 1st replacement which was 14 months after purchase.
The photo below is from the recent crack which is almost identical to what I recall of the first crack (I didn't take pics of the first). It appears that a small stone chip near the edge of the passenger side of the windshield initiated the crack in both windshields. The length of the crack is about 15". We've driven the car twice since the crack and it grew about 3" each time but not while driving. Perhaps the heating of the interior / glass while parked outside in the sun (sunscreen not used) caused the crack to grow.
Fortunately I have full glass coverage as Safelite says the total cost is $426 about the same as last time. Last time the techs that came out indicated they had replaced several C-Max windshields. I'll ask again Saturday when they come out to replace it.