Those have to be THE stupidest kids I have ever heard of. How the HELL did they think they could get out of that once they hyjacked the bus? Stupid kids...
I can see it now.... "I demand you take this bus to Disneyland and buy us all ice cream or I'm going to slit her filthly throat!" Then the Bus driver throws a stack of ultra rare Yu-Gi-Oh cards on the floor, and in the mad chaos that follows, disarms the child by giving him a major weegie. Then maybe afterwards she held him down to the ground and let a long spitrope trail from her mouth, just to suck it back up before it hit the child's face. My brother used to do shit like that. No I'm not bitter.
There was an incident a few years back in Japan where a teenager stabbed a passenger and held the rest of the bus hostage. Japan has to be the only place where an entire bus could be held hostage by one person and a knife.