I am looking for an old lifetime movie with Joanna Cassidy and Danielle Harris?

The movie had Joanna Cassidy playing Danielle Harris's mother.She was a bus driver and when she went to pick her daughter up she was kidnapped by a dirty black car. Thoughout the movie she chased this car in her bus and at the end the car went off a cliff. I can't remember the name of the movie and I can't find it anywhere...Can someone help me please??