The object here weighs 1,000,000 Kg (a bit more than twice the ISS), and generates 1,000,000,000,000 N of thrust (2.5 million times an Atlas V starliner) The whole graph takes place over 480 seconds.
This is an abstraction, and the object's speed exceeds the speed of light towards the end. I don't know how the formula allowed for that. The values are all scaled to fit the screen This is test for a speed system that will be implemented in a game I am making