Because you never know what trivial bit of information may ultimately prove to be vitally important.
A brilliant plan to keep anyone from wanting to steal your truck!
That guy had better keep out of any of the city's neighborhood clean-up efforts. He might end up with a nice all-paint-colors gray.
There's a old van like that around here, tho it's owner is more of the Fire and Brimstone than unrepentant hippie.