My understanding is that a deer's attention span is at most some twenty minutes. Absent a really loud and lengthy disturbance, most deer will resume normal activities whether a vehicle is around or not, after that twenty minutes--or maybe more, of course; I'm a pessimist--is past.
I'd figure that an older, trophy buck is gonna move away from any notable disturbance, and not likely return that day. Easing in quietly becomes far more important than when a person is merely meat hunting.
Vignette: One of the older hunters on our lease liked to park his car at a particular spot. He regularly collected a six-pointer there, year after year. One day he was late getting back to camp for lunch, so we went down to check on him. He was okay; he'd just dozed off, taking an unplanned nap.
And about fifty wild turkey hens were all around his car, with three or four on top of it.