Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: The real story

Ever stop to think about what makes your car go? Well, spark plugs ignite the fuel under pressure, Spark Plugs get their "Spark" from Tesla Coils, a device that takes a low voltage and transforms it into a very high voltage, high enough to cause a spark. Ever wonder why a hose under water dont collapse when suction is applied, well it is because a young man by the name of Nicolo Tesla dove into the water one day to see why a pump was not drawing water to put out a fire and found that the hose had collapsed. So he designed what is used today by fire departments as a suction hose... Read all about it in a book properly titled, The Prodigal Genius.