Drive was partly inspired by The to the Galaxy. It does not reflect the book imagery, but I feel obligated to give him a credit for his unparallel fantasy. The image portrays an allegoric way of traveling through space and moving from one dimension or mental state to another. - The to the Galaxy. "It was left to a student who reasoned that if such a machine is such an impossibility, then it must logically be afinite improbability (obvious isn't it!?). So, the student geezer calculated the probability (or improbability) and fed the answer into an improbability generator (that was just lying around), and made a nice cup of hot tea, and turned it on! (not the tea, the generator). Presto!! The infinite Improbability Drive was discovered!"