....noticing the incredible amount of sh*t lying around which is seemingly thrown out from car/van/lorry windows
Macdonald's packaging, drink bottles, rubbish, all sorts of sh*t just strewn about in the verges.
Either we're* getting worse or the Council's aren't clearing it up anymore (see also: Fly Tipping).
Seriously, make an effort to look for it you'll be surprised.
I never have and never will throw anything from my car, well I've never eaten/drank anything
in my car so carry no waste anyway.