People
"The road suddenly turns out to be impassable because it's being rebuilt by the Chinese, only we're not supposed to know that. And exactly what is meant by 'suddenly' I don't know because they've apparently been at it for ten years."
— Douglas Adams

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Adams complains about a road that's suddenly closed for rebuilding. He then mocks the word 'suddenly', since the work has apparently gone on for ten years. The joke is bureaucratic vagueness meeting a very long delay, with broken pavement as the picture.
Context reviewed