1.0
video
A lots of information on the numerous tractors
960
540
iPlayerHD
https://iplayerhd.com
<iframe src="//iplayerhd.com/player/video/93c0e104-bd67-4734-8452-e53358a1f8fa?cbartype=over" allowtransparency="true" frameborder="0" scrolling="no" allowfullscreen mozallowfullscreen webkitallowfullscreen oallowfullscreen msallowfullscreen width="960" height="540"></iframe>