So I was driving from St. Louis to Chicago yesterday and my car broke down. I was pulling on the highway so I was accelerating to about 65-70 and my car wouldn't shift, it's an automatic. The car revved to 6k and stayed there for about 10 seconds then finally dropped down to 3k and started making a loud grinding and knocking sound. It sounded like I was dragging something, I thought (hoped) maybe the plastic guard under the bumper came loose so I pulled off on the shoulder immediately and looked and nothing was hanging down. I was able to start the car again and the noise started I popped the hood, no leaks or overheating or any visible damage, the next exit was a couple miles down so I attempted to crawl to the exit on the shoulder at about 10mph and the car died when it hit 3k. I was able to start it again drove a little further, maybe a half mile and it died for good. Any ideas on what I could have done, D16Y7 with Y8 head.