MacBeth and the flying Christmas tree

Thirty-two model-rocket engines power a Christmas tree. (Thanks to BoingBoing for bringing this to our attention.) It’s evocative, as so many things are, of MacBeth’s words in act 5, scene 5 of the Shakespeare play:

‘Fear not, till Birnam wood
Do come to Dunsinane:’ and now a wood
Comes toward Dunsinane. Arm, arm, and out!
If this which he avouches does appear,
There is nor flying hence nor tarrying here.