Not sure what it was...it came off a 4' high "rampart" a guy had in his front yard in a residencial area, and came across from the drivers side. It hit right on the windsheild mid leap.
I was going 45 mph. I got a face full of glass (and a mouthfull too). It flipped up over the cab, landed in the back and trashed 130 dollars worth of groceries, then fell off the back (tailgate was down) and kicked around on the ground for a minute then got up and ran off. I watched it run a good couple hundred yards before it dissapeared into the wood.
No comprehensive insurance, just liability.