I’m going to my first Nascar race on Saturday and I am not sure when the actual race starts. Gates open up at 8:00Am but I don’t want to get there until before the actual race. Does anyone know what time that takes place?

My daughter backed my car into a curb which bent the pipe to the muffler where it joins the muffler. It rumbles, rattles and is sucking the life from my car. How do you fix it? How much would it cost?