We apologise for the inconvenience

Part of the reason why I never bothered to read Mostly Harmless (the last book in the increasingly inaccurately named Hitchhiker's Guide to the Galaxy trilogy) was because someone had told me that it ended on a downer. Never one for caring about spoilers, I flipped through the book, and sure enough the ending was somewhat... less than satisfying. Well, for me, anyway.

So it was with great trepidation that I listened to the Quintessential and final phase of the radio series, getting up to the last fit and gearing for the downer...

And bless 'em, they gave me a happy ending(s). I like happy endings. Does anyone know if this was the ending Adams intended but never got to do?