drug dealers use drone, but it leads to their downfall

 https://interestingengineering.com/spanish-police-capture-5-engine-drone-used-for-drug-transport

 

Made in China, the drone has a total of five motors, four of them are electric and allow it to take off and land vertically. The fifth motor is a two-cylinder internal combustion engine that supports horizontal flight. With a maximum speed capacity of 105 miles per hour (170 km/h), the drone can fly at an altitude of 7000 feet (2000 m). The Spanish police, however, estimate the drone flew at lower altitudes to save fuel and avoid being detected. 

Priced between €30,000 and €150,000 (US $35,000 - $176,000), the drone was operated using an electronic system that relayed the origin and destination along with all the waypoints along the way. It could be flown remotely but the gang was not very aware of its technical capabilities, the Spanish police told the media outlet. They hollowed the front of the drone (which would typically sport equipment such as cameras) to transport their cargo from Morocco to Almáchar.  The dismantleable drone has a wingspan of 15 feet (4.5m), big enough to be detected on radar. Along with its detectable telecommunication, its large size led to its discovery and then tracking to its location. 

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This will get dangerous if people start throwing up large drones without coordinating with other planes.