This craft isn´t about the low effort cargo plane, its about what´s hiding inside of it.
Fly over your destination, press 6, to open the cargo bay doors, then press 5 to deploy your buggy. It is equipped with parachutes and a rocket assisted landing system(really cool stuff), which both will deploy automatically.
The minimum dropping altitude is 150m, although 250+ m will make for a smoother landing. At low altitudes, you shouldn´t go faster than 150 m/s, or else the chutes will snap off.
At 1000 -2000 m, you can go up to 180 m/s and for altitudes above that, you can go even faster (above 5000m, you could theoretically drop the buggy at mach 2+, since drag slows it down enough before the first chute opens).
Please note thet the plane needs to be somewhat steady while dropping the buggy and at altitudes above 1600m, the plane needs to accelerate before pressing 5. And please turn of heat damage, because the rocket engines will fry the tires. oopsies...
Have fun :D