While driving the car in commuter traffic on Route 22 Highway the car transmission stopped working and car bucked and then stopped. Upon getting out of the lane of traffic there was a large amount of transmission fluid on the ground. Car had to be towed as it would not move. Danger was the car stopping on the highway in busy traffic. Upon inspection by car dealer they found it had a broken transmission cooler line . The Lincoln dealer put in a Tube Assembly repair kit and replaced all trans cooler lines at a cost of $ 1,029.72 to me. No Warning lamps or messages came on before the lines broke.