Instruct: Classify Amazon reviews into positive or negative sentiment
Query: poor function, died after about 1 hour

This self powered train does not work very well on standard thomas train track. We have a glue-down set up with nearly perfect alignment of all track pieces, yet is still did not run very well (either getting stuck, or jumping the track on corners). Build quality is generally mediocre. Our unit died permanently after about 1 hour.