My neighbor Dick is a milk truck driver. He picks up milk from area farms and delivers it for processing to the milk factory in Springfield. He loves farming and farmers. Working with farmers has been his life. Along his pick up route, he gets everyone's news. I'm sure he could write a book if it had the interest. This is his own truck he drives.
He got the letters for the saying at the auto parts store. They glue onto cars. Didn't he do a great job? Do you see the "barbed wire" around the license plate?
If you want a bumper sticker that says "No Farms, No Food" you can order one from this site.