Strange amount of lift.

Can someone figure out what the h**l is going on with this car?
The lift on the rear is just idiotic, and the topspeed, for a 550+hp car, seems low.
Is a car supposed to GAIN topspeed if the wing, mounted rear, goes from 0 to 100 setting?
The lift on the rear is just idiotic, and the topspeed, for a 550+hp car, seems low.
Is a car supposed to GAIN topspeed if the wing, mounted rear, goes from 0 to 100 setting?