I need to find you some pictures of this. It happened, but with an angry human in Vermont. Flattened a bunch of police cars. Here are some [1] but I know there were more [2][3]. Trying to find the pictures of the cops laughing. Well, those pictures are gone, but you can see most of the story.

[1] - https://www.nbcnews.com/news/us-news/vermont-man-uses-tracto...

[2] - https://www.dailymail.co.uk/news/article-2182958/Police-Vt-f...

[3] - https://motleynews.net/2012/08/03/lmao-vermont-man-upset-ove...

Our neighbor would chase "trespassing" police off his property with a bucket loader (tractor with a bucket).

There's also the Killdozer with Marvin Heemeyer but it was a bulldozer effectively turned into a tank

I remember the videos of that. That would be a good example of high damage low risk to someone that takes control of a GPS/AI controlled bulldozer. And that was just one bulldozer. Imagine if every tractor, bulldozer, rock hauler, excavator were connected to a gaming engine and suddenly went full quake-3 arena at the same time.

That is absolutely hilarious.

Combine harvesters can travel up to 40km/h when the harvesting mill is not operating.

Then they are just a slow truck. Hacking a truck would then be a more effective route.