So long, and thanks for all the fish

And then, one Thursday, nearly 2000 years after one man had been nailed to a tree for saying how great it would be to be nice to people for a change, a girl sitting on her own in a small café in Rickmansworth suddenly realized what it was that had beend going wrong all this time, and she finally knew how the world could be made a good and happy place.
Sadly however, before she could get to a phone to tell anyone about it, the Earth was unexpectedly demolished to make way for a new hyperspace bypass, and so the idea was lost, seemingly for ever.
This is her story.

Stephen Moore reads the fourth book in the Hitch-Hiker trilogy, in which Arthur Dent's travels bring him full circle.