Aftenposten offers you the ability to download the sound of a deere roaring for free at http://www.nrk.no/programmer/tv/ut_i_naturen/1.1571578
The Deere homepage http://www.deere.com
Have Bondebabes gotten competitors? The John Deere band http://www.fk.no/index.php/article/articleview/5391/1/42/