Haha, who's ever bookbag that was on the bus (the first bag) was totally prepared. They had a fuckin roll of duct tape. They shouldn't of have left their bag behind.
Also, I found the effects in this to be pretty amazing. I think at some point, there's a good fan video, but this is just too good. Too good to just be bored some place and make it for no reason other than you're a hardcore fan.
And lol at how it seems like he lost them when he entered that building for a second.