I had a scary experience with my 94 Bronco yesterday. I got into the truck and started it up and put my foot on the brake and it went to the floor.(good thing I had the E brake on) The brake line that goes to the rear brakes ruptured. It looks to me that it had been rubbing on the gas lines and was weakened. My truck only has 70k on it and it's like new yet.I don't know if they are all like that or mine was just put together on the wrong day of the week.