The Question and Answer section for Charlie and the Great Glass Elevator is a great resource to ask questions, find answers, and discuss the novel.
I'm not sure exactly where in the book you are meaning. Wonka is certainly excited about his elevator because there is nothing else like it. He announces that he will crash right through the roof of Charlie's home.
Hyperbole: Deliberate exageration not meant to be taken literally.
Take a quick scan of your book and you should find some.
-"Nearer and nearer came the earth below. Oceans and continents rushed up to meet them, getting bigger every second." (84)
-"He kept silent a bit longer, allowing their curiosity to grow."
