Bus or Plane Tour

For all the talk about Bush's bus tour (and the bus is one of the most lavishly outfitted buses of all time, the mainstream media said today), why is it I've seen four different shots of Bush getting off a plane (different times, different clothes) during the tour, but only one shot of him on the bus (where he's sorta using the French flag to lean on like a towel over the dashboard)?

I take it there are several buses just being moved about to accommodate where the plane lands.