What cause a trans to stop pulling after 200ft then start back after its cooled on 1999 Mercury Cougar

My car will start and go about 200ft and the transmission will stop pulling as though I would have put the car in neutral. I can shut the car off for a period of 5 to 10 min. and start it back and it will go another 200 ft.. Would that be my transmission is going out are a sensor in the transmission.

Asked by for the 1999 Mercury Cougar