It would be nice to know what the farmer gets for the extra power. I notice where I live that there is a marked difference in speed of travel of the combines between older and newer models. I assume that there is some play off between width of 'cut', speed of threshing and speed of travel, but do not know for sure. Not speaking the local language very well, it is difficult to ask.
As for the tracked 'wheels'; all the local farmers seem to automatically plough the field before replanting so I wonder if such arrangements are only meant for till-less agriculture, something that will become more popular as oil supplies diminish.

Important details we want to know are road transport width, cut width, maximum throughput, cutter height range, fuel consumption (in litres per ton of grain in the chaser) The main advantage of tracks like the New Holland system is more ground contact per width. Current systems use double and triple tyres which make road transport awkward. The logistics of getting these things from paddock to paddock can make or break a harvest operation.

Combine heads (grain platform or corn head) are sold separately. This unit will support up to a 45 foot wide grain platform.
Moving the combine from one field to another down a road involves removing the header and putting it on a four wheel transport.
Tracks instead of wheels do help with traction and soil compaction, especially in wetter fields.
Here is a brochure (PDF) with additional information. Of special interest to this audience would be the operator controls in the cab. Farming has changed in some incredible ways over the last number of years thanks to advances in technology.
http://agriculture.newholland.com/us/en/About-New-Holland/NewCR/Documents/NewCR_NH36145307.pdf

AllenH, thanks for the link which has some awesome photos and info. Chances are slim to none that I'll ever be invited to ride in a harvester so that's the closest I get.

I don't think the song was from the pre-mechanical farming days- it sounds very much like the work of the late eccentric Scottish humourist Ivor Cutler.
Not one of his better works, but if you can tune into his highly individual sense of humour, he can be very entertaining.

I am betting engine torque is mildly astronomical.

No cup holders in the cab?

Track vehicles are know for there efficiency, that is, harfing down fuel and gobbling power. seems New Holland needs to focus on building square balers and PTO driven hay rakes.

The amount of work it takes to prepare sail for planting is dependent on how compressed the soil is. The tracks save fuel by reducing the necessary number of times the tractor has to cross the field to get the soil ready for planting.

Ya I'm not buying it, the maintenance alone on track vehicles is crazy expensive, dual wheels are the best way. I bet a track for this thing is about 8 grand, and I'm probably way off, it's probably twice that. Whats next walking equipment ? new Holland I think used to be new Idea or White. been awhile that I've been in a seat. tracks do work well on skid steers, in situations, like a yard where you don't want to tear up the grass. but to fully understand the amount of power consumed by tracks.. slap some on your wheeled bobcat SS and feel the big time loss of performance. And as a added bonus they need huge cooling systems, making a hard to work on vehicle even harder. I have a old 80's model 920 mustang SS with a T handle steer. no electronics no $3000 computer that needs setting the parameters before it will work ? just a little 3 cylinder Yanmar that starts every time., I love it