Is the elevator really fast or the bullet train fast?

Helicopters are faster and more mobile than cars.

Helicopter is mainly composed of airframe, lift (including rotor and tail rotor), power and transmission system and airborne flight equipment. The rotor is generally driven by a turboshaft engine or a piston engine through a mechanical transmission system consisting of a transmission shaft and a reducer, and can also be driven by the reaction force generated by the jet from the tip of the blade.

The maximum speed of a helicopter can reach more than 300km/h, the dive limit speed is nearly 400km/h, the service ceiling can reach 6000 meters (the world record is 12450m), and the general range can reach about 600 ~ 800 km. The range of internal and external auxiliary fuel tanks can reach more than 2000 kilometers.

EMU generally refers to a rail vehicle with its own power and bearing operating load. However, in modern centralized EMU, EMU is closer to the locomotive role in traditional trains, which generally does not bear operating load. In China, trains with a speed of more than 250 kilometers per hour are called "bullet trains".