<prompt> Human: My fiancé had been feeling sick for about a month now. He drove with the windows of his car shut for the first time since winter a few days ago and noticed a strong smell of exhaust. His symptoms are concurrent with carbon monoxide poisoning. His current car is an 06 and the price of repairs is worth about as much as the car, so it makes more sense to buy than to fix it. Financially, itll be a stretch for us, but we can afford it.We test drove a couple cars over the weekend and are going back today to talk to the salesman again. Since we are avoiding using my fiancés car as much as possible as in, he is driving it home from work today and to the dealer once we sell, he is pretty set on buying today.Any last minute advice on what we should do tonight? This is my first time ever being a part of the car buying process, as my car was a gift from family.  <response>: he is pretty set on buying today.BE READY TO WALK AWAY. Do no, I repeat, DO NOT tell them what you said above. It makes you very vulnerable in the negotiations. If its not a good deal, if theyre driving too hard a bargain, if youre feeling pressured...walk away. Go to a different dealership. Heck, go to a different town and tell them the awful first quote you got and see if you can get a better deal. 