If you let the clutch out fully before you press the accelerator then the car would stall.
To find the 'bite' have the clutch in, press the accelerator to get the revs you want and then slowly release the clutch. You will feel the car start to bite and at this point you can release the...
It would have had to be his own free will as there would no point in an omnipotent being running through one scenario only to change its mind and then manipulate things differently. It would have just manipulated things from the start.