(I took care to give no obvious spoilers about the story)

Title: The Hitchhiker's Guide to the Galaxy #6 - And another thing... (on Librarything)
Author: Eoin Colfer
Format: paperback
Pages: 340 pages for the story, some ten more with comments by Eoin Colfer and a timeline and such.
Year published: original 2009, my edition 2010
Language: English (= original language)
ISBN number: 9780141047720
Reason for reading: I had read the previous 5 parts and I liked Eoin Colfer's other books (mainly the Artemis Fowl series). My review of book 5 is here.

Back cover text:
Arthur Dent led a perfectly ordinary, uneventful life until The Hitchhiker's Guide to the Galaxy hurled him deep into outer space. Now he's convinced a cruelly indifferent universe is out to get him.
And who can blame him?
His life is about to collide with a pantheon of unemployed gods, a lovestruck green alien, a very irritating computer and at least one very large slab of cheese. If, that is, everyone's favourite renegade Galactic President can get him off planet Earth before it is destroyed.... again.

First alinea of the "Introduction" (skipping "Foreword" which is actually part of the story as well already):
So far as we know... The Imperial Galactic Government decided, over a bucket of jewelled crabs one day, that a hyperspace expressway was needed in the unfashionable end of the Western Spiral Arm of the Galaxy. This decision was rushed through channels ostensibly to pre-empt traffic congestion in the distant future, but actually to provide employment for a few ministers' cousins who were forever mooching around Government Plaza. Unfortunately the Earth was in the path of this planned expressway, so the remorseless Vogons were dispatched in a constructor fleet to remove the offending planet with gentle use of thermonuclear weapons.

Review:
here!