I do not even have 70k miles on my 2006 Fusion and my transmission went out as well. Drove fine unless you needed to get on the interstate or get into Overdrive gear - would then jolt, rpms up to 5 and 6 without accelerating one bit. Now I'm having to pay over $2400 to replace it.
With as many reviews as I've read since this happened to me (more than I thought with this same issue!) this definitely needs to be a Recall from Ford or at least some kind of compensation when they are aware there is an issue with these models!!
Before this happened I absolutely LOVED this car, now I am a little leary about the Fusion models in general.