>>941110910 (OP)
This is how it would be done. later on.
Need to get her away from the city though first so no passerby could see any struggle take place. After he wins her confidence and gets her in the car, maybe make up some bullshit on the way to the tavern that he just forgot he had to pick up a some money from a friend who just happens to live out in the middle of nowhere. And the further he got away from the city, yeah she'd probably getting a bit uncomfortable but still wants to believe in the validity of the (fictional) situation her would be abductor has created for her. He would promptly pull over in a corn field in the middle of nowhere and there would be little she could do and realizing the grave disadvantage she was at would have no choice but to comply. Look, he would have to tell her something. To be quiet to to what he told her. After the sex act was done he once again would have that deep moral conflict and become torn apart as to the correctness of his own conduct. After that the decision to kill the individual would come into focus.