What's the title?

[librarywitch]

Hello,

Can anyone please help me with the title of a book that my husband is looking for? All he can remember is that it was about some people who travelled across the universe in an old camper van, visiting different planets! I don't know whether it was a kids book or an adult one. Thanks.

[Upforit]

Couldn't have been the 'hitchhikers Guide to the Galaxy' by Douglas Adams could it? The successful TV series was based on it, i think.