Olga the Snowplow and the disappearance

Olga the Snowplow lives in Rattletown. She?s not like the other snowplows. Her old driver rebuilt her so she could be controlled remotely. Olga understands what humans are saying, but no one knows. She often feels lonely because she?s so different. Olga befriends Laura, an old lady who lives right outside Rattletown. But one day, Laura disappears. Where could she be? Did something happen to her? Can Olga the Snowplow find her?