No smoke etc

We went to a local show this afternoon. Lots of tractors and agricultural machinery and people seemed to enjoy looking at them!!
"Tractor pulling" was one of the events advertised. I had never seen it before and I assumed it would be people trying to pull a tractor.
I was wrong.
It's various tractors trying to pull a big sled thing!!!!
Just before this shot was taken, I overheard someone saying " If you've seen one tractor pulling, you've seen them all" and I would have agreed, but not in this case.
As soon as it had travelled about ten metres, it gave out an enormous bellow of smoke, as you can see in the photo, and that was it.
No one was injured though, except perhaps the driver's pride!!!!