This is from one of the Hitchhiker's Guide to the Galaxy books. They're with Slartibartfast driving onto the factory floor for creating planets. Slartibartfast, as you recall, is a famous "world designer" who won an award for designing the Fjords of Norway.
> Arthur had a fairly clear idea of what infinity looked like.
>
> It wasn't infinity in fact. Infinity itself looks flat and uninteresting.
> Looking up into the night sky is looking into infinity - distance is
> incomprehensible and therefore meaningless. The chamber into
> which the aircar emerged was anything but infinite, it was just very
> very big, so that it gave the impression of infinity far better than
> infinity itself.