Max safe long straight performance in a road race?

[Humba]

Is it possible to run the engine with a higher hp level in qualifying if only one lap would be driven? Then the engine would be tuned to lower level for the race. What if we make the straight longer. Like 1,5 miles. From the corner that leads to the straight the speed would be already 60 mph. I guess the acceleration is very slow near the end due to the friction forces from air and drivetrain, tires etc. Would it be possible to drive over 200mph speeds in qualifying?