Batman would see the kid, jump out of his Batmobile while in motion, land on the car, open the door, grab the kid, swing him to safety, then get back to the Batmobile just before it blows up the car the kid was just saved from.
What a badass.
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~Halo Give into the Night.
http://a.imageshack.us/img443/8466/shadowhalo.png