what caused that much smoke? The front tire fire that someone mentioned earlier?

Sucks you can't open a window, and get a nice fresh (250 knot) breeze to clear the ****... and fan the fire...

Hey, can anyone open up the emergency exit doors when the plane is still flying?

Let's say the smoke in the cabin was that bad... could a steward open the back door? Not that anyone has a parachute or anything, but perhaps out of desperation?