the speed without the turbine is 3MPH
you can increase this speed in active 3,
don't go over 10MPH, the treadmill will probably explode

How do you use it? Use the throttle to speed up, but the tractor will only move when the VTOL moves, up he will go forward, backwards you put the lever on the opposite side. To turn the wheel is in Roll

The Holt tractors were a range of continuous track haulers built by the Holt Manufacturing Company of Stockton, California which were named after company founder Benjamin Holt.

The Holt 75 was developed by Benjamin Holt, who also invented the first commercially successful track-type tractor, which he trademarked as the "Caterpillar".

The Holt 75 was a gasoline-powered, track-type tractor that was used as an artillery tractor during World War I. It was a dependable and powerful way to move munitions and provisions across Europe's difficult battlefields. The Holt 75 was able to move large field pieces faster and further than horses or mules.

(Holt 75 towing a BL 8 inch Mk I In the battle of Somme, July-november 1916)

With the expansion of the British Army in late 1914 and early 1915, there was a severe shortage of tractors suitable for hauling the heavier artillery pieces. At the start of World War 1, steam-driven traction engines had been used by the RGA for towing medium and heavy guns with the exception of a few batteries of mediums which were drawn by teams of Clydesdale draught horses. However, as the war progressed petrol-engined mechanical transport gradually superseded the horse. The reason was that it was soon found out that horses were inadequate in the congested and usually muddy conditions of the Western Front for pulling medium or heavy guns due to the large teams required. The animals remained with the horse and field artillery batteries for the duration, therefore, while tractors were used for larger weapons. Steam traction engines were pressed into service initially but the first "standard" tractor adopted in quantity was the Holt, an American-built agricultural tractor with petrol engine and crawler tracks.

(Holt 75 Comvoy, Battle of the Somme)

The Holt 75 h.p. tractor weighed about 15 tons and it had a top speed of just over 3 km/h for towing and 8 km/h unladen. Steering was effected by locking the tracks in the direction of the turn and the braking action was controlled from a steering wheel. There was a jockey wheel at the front to assist stability and this was carried in a forward extension of the chassis.

(Holt 75 and BL 8 inch Mk VI)