Scribe-ls

Aw gee whiz, we've been watching these unlikely tomato plants since late spring.  Hubby stuck them in a seemingly desolate six-inch-wide strip of dirt between our drive and the neighbor's and they appeared to thrive, even after having been run over.  They have tantalized us with ever-burgeoning fruits promising delightful caprese and sunshiny sandwiches. 

Well, wouldn't you know, the darned things have each split open before reaching pickin'-goodness.  Awww.  What the heck? 

Are there any gardeners out there with some wisdom about spontaneously bursting tomatoes?  I've never seen such a thing!