Omg my bad...I just read the actual article. I didn't realize this was a 16 year old...He should have known better!! 
I thought this was like an 8 year old!
Seahorse513=EPIC FAIL
It is OK SEA, I when I read the story also thought this was a little kid not a male just a few months off from being old enough to vote.
Something about this story stinks, why was the shooter riding in a car with a fully loaded cross bow??
How fast was the car going at the time ------Like bullets any projectile is influenced by the wind speed and the atmospheric pressure at the time.
How far from the road were the kids standing when the boy was shot, I have never seen a small cross bow with a 50 pound pull. Not to say they don't have them but I have yet to see one.
My guess is that if in fact the kids were throwing rocks at cars, the driver and passengers saw this from driving in the opposite direction, went up the road loaded the bolt, turned around and were ready to teach this kid a lesson. The car could not have been going more then a crawl if not stopped when the bolt was fired.
Or for some reason the shooter is the worlds greatest archer and needs to be in the military.