It's a combine. It's a grain cart. It's both, actually, in one unit.
The result of over a decade of work from Ben Dillon of Indiana, the Tribine, which is considered a Class 8 combine (greater than 375 horsepower) features a 1,000 bushel tank and a 2-minute unload time.
Perhaps counter-intuitively due to its size, the Tribine also cuts down on soil compaction. Normally a grain cart moving back and forth from the combine makes a lot of tracks. The Tribine is built to always unload at one end of the field, effectively eliminating that problem.