What is another word for vactrain?
Pronunciation: [vˈaktɹe͡ɪn] (IPA) 
Vactrain is a hypothetical transportation system that works on vacuum technology. It is alternatively known as vacuum train or vacuum tube train. Other synonyms for the vactrain include hyperloop, maglev train, bullet train, and high-speed train. Hyperloop is a pneumatic tube transport system that uses a sealed tube system that transports passengers or goods at very high speeds. Maglev trains use magnetic levitation technology to reduce friction and hover above the tracks. Bullet trains refer to high-speed trains that run on special tracks that allow them to travel at very high speeds. High-speed trains refer to rail services that travel at high speed, typically above 200 km/h.
