Harvey entered the back just cause he felt like being at the back hoping that not many people will be there so that if he did meet a certain someone here then they could at least be alone before they got home. Cause once they were home it would be harder to hang out as much as they wanted what with parents wanting their time too before the new year started, so he entered the back and sat down next to the window so that he could watch the scenery go by as they travelled though he knew that he wouldnt be watching the scenery for much longer.