Everything up to the point of failure was fine. As I pulled into the access road at work I momentarily stopped to allow cross traffic to pass. As I stepped on the gas I briefly accelerated and then I heard and felt a 'clunk'. Noticed the engine was revving. Discovered the transmission was not putting power to the wheels. Coasted to a stop in a parking space. Found PARK with engine running. Moved gear selector into REVERSE and all forward gears. Nothing. Turned off engine. Waited a few moments. Repeat. Nothing. I topped off the trans fluid level a month ago. Noting seemed amiss (i.e. color, odor). Trans has never been worked on and has 183k miles. A quick search indicates this is an issue for the Taurus. I may be able to get the trans to work by disconnecting the battery and allowing the PCM to search for codes. Suggestions?