Does the idea of negotiating over a new vehicle keep you up some nights? If the answer to that question is yes, you do not have to have all those sleepless evenings. As it stands, having done some research before you go to your first dealership to look around and discuss the matter is your best bet. Remember, car salespeople want to move as many vehicles as possible, so you have opportunities to land a good deal if you do your homework ahead of time, along with keeping a positive and cooperative attitude. So, will you avoid fretting the art…