Sweet dreams.

From what I remember of this book I thought it was too clever for its own good and not really that funny. Let's have some lions and tigers and bears in the streets? prefiguring Mary Doria Russell's "The Sparrow" really - and that novel's line about 'we don't have dangerous wild beasts in our cities' led to the retort on this reader's part, "no, but they didn't build the cities", and thereby to Slartibartfast's line in The Hitch-Hiker's Guide to the Galaxy about "the mice were very upset ... [the duck-billed platypuses] didn't pay for it did they?" And here, six years before H2G2 we have someone designing the Alps, just as good old Slarti pined to build some fjords. Which is no reflection on Sweet Dreams. I still thought it was too clever for its own good though, so many years later I probably need to read it again.