Q&A

I was pulling into my driveway this morning and when I put the car into Park, my car still was moving forward, as if the car were in Drive. I put on the brake and shifted the car into Reverse and the car still moved forward. I shifted back into Park and killed the engine, the car then started to roll backwards as if the car were in Neutral. I put on the parking brake, waited a few minutes and then tried to crank the car. The car will not crank and I can no longer shift gears at all. What happened? and about what is the estimated cost of repairs for something like this? Thank You!