Need some advice on what might be wrong. The car is an '05 Taurus, 3.0 OHV, 117k miles and belongs to my girlfriend. She had been driving around town for about 20 minutes when she stopped at a red light. When the light turned green, she pushed the gas and the car took off normally. After about 25 feet, the car began to act like she had accidentally shifted into neutral--the revs climbed to about 5k (as if there was no load on the engine) and the car stopped accelerating. She coasted through the intersection and called me.
What I know:
-The car will not engage any forward gear or reverse. The shifter moves normally and takes the normal amount of effort to move.
-Park is still park, neutral is still neutral.
-No CEL's or dash lights.
-Not making any noises I can hear, nor did she hear anything when it let go
-I changed the fluid and filter about 7k miles ago, the fluid in there looked good with no big chunks.
-Pushing a Taurus an eighth of a mile to where you can legally park it sucks ass.
Any thoughts? I know these cars are hard on transmissions, and 117k seems to be about due. However, the fact that it all the gears went out at once seems to me that it might be something else...shifter, or control module, or something.

