stress

Took the car out last weekend for a quick run. When I got back I noticed a 14" long crack in the hood - directly above the latch on the drivers side. It has sheared clean thru. Stress?

So, I woke up this morning and took the car for a spin. Upon return, I found a major stress crack on the hood - it runs from side to side on the locking pin and has broken clean. Seems like a stress crack that started on the drivers door side and spread very quickly. Anyone seen anything like...