Detonating buses coupled with the penchant for killing people makes me wonder if the buses aren't designed intentionally that way - perhaps detonated by some form of invisible directed energy? It may be interesting to aim a speed-recording radar gun or something at one (unoccupied, of course). Or may be they are equipped with a detonator that can be detonated with a phone call. Who knows? No amount of evil surprises me anymore.