Hyperloop UPV
The Hyperloop UPV concept is a levitating rail-free pod design. Using magnetic repulsion and air cushioning for levitation is expensive and can produce unpredictable forces. The pod is equipped with a hybrid system of permanent magnets and electromagnet units, being able to control lift, so it can hover from the top of the tube. That way, the pod doesn't need so much electricity to be lifted by itself. Propulsion is obtained through expansion of the air with a nozzle, located at the rear of the pod, achieving speeds of up to 1000 km/h. The turbine recovers energy from the flow allowing a more efficient journey. This clean tube layout is said to cut costs in up to 30% of the whole Hyperloop project (about 180m USD) and the possibility to comfortably fit more passengers.
Controlled-access highway
Currently, most of the expressways in Vietnam are 4 lanes, some routes as Ha Noi - Hai Phong, or Phap Van - Cau Gie is 6 lanes. The only elevated expressway in Vietnam is Mai Dich - Thanh Tri Bridge (also known as the third ring road in Hanoi). The cost of building Vietnam's highways is one of the most expensive in the world, with an average cost of $ 12 million per km. Compared with China, where there are similarities, their highway costs are only $ 5 million, the US and European countries are $ 3-4 million per kilometer.