My car started shaking violenty just this past week. Yesterday it stalled on the freeway as I was driving down the freeway at about 60 mps, I felt the car slowing down and had to pull to the side. As I pulled to the side it made a screeching noise and it was hard for me to park it. I had to put some force into changing the shift to park. Now my car wont start at all and the key is somehow stuck in the ignition. I have tried to turn on my car repeatedly with rest periods. Any ideas as to what is wrong with my car?