Giant agricultural machinery projects?

I would like to know if they are projects of biggest agricultural machines than these machines for the future :

Articulated Tractors: > 800 HP

Normal tractors : > 310 HP

Combine harvesters : > 540 HP

Forage harvesters : > 800 HP

SugarBeet harvesters : > 610 HP

Potato harvesters : > 400 HP

Are they projects ?

If yes ,I would like to know the specifications from the machines ?

Thanks to respond to my question .

Marc

The Big Bud 747 was an articulated 4 wd farm tractor that started off at, I think, 760 hp in 1977 and several years on was boosted to 900 hp. It has now been retired and restored and sits out in front of the factory where it was built in Havre, Montana. (Check the link below.)

An Australian manufacturer, Upton's, was making 2 wd tractors as big as 350 hp in the late 70's and early 80's. These tractors reportedly regularly out-pulled larger 4 wd tractors of the time. You can read more about the Upton tractors at:

Link

About the other types of machine you mention, I have no idea.

Hope this helps.

You have a wonderful day. Best wishes. Deas Plant.