Virgin Hyperloop is had its first-ever passenger test. They have two people at a time in the pods on a 500-meter test track. There are eight companies working towards developing the Hyperloop concept.

The Hyperloop is a proposed mode of passenger and freight transportation, first used to describe an open-source vactrain design released by a joint team from Tesla and SpaceX. Hyperloop is a sealed tube or system of tubes with low air pressure through which a pod may travel substantially free of air resistance or friction. The Hyperloop could convey people or objects at airline or hypersonic speeds while being very energy efficient. This would drastically reduce travel times versus trains as well as planes over distances of under approximately 1,500 kilometers (930 miles).

Elon Musk first publicly mentioned the Hyperloop in 2012. His initial concept incorporated reduced-pressure tubes in which pressurized capsules ride on air bearings driven by linear induction motors and axial compressors.

ET3 Global Alliance is an American open consortium of licensees dedicated to global implementation of Evacuated Tube Transport Technologies. It was founded by Daryl Oster in 1997 with the goal of establishing a global transportation system utilizing car-sized cargo and passenger capsules traveling in 1.5meter diameter tubes via frictionless superconductive maglev. ET3 has filed a series of new patents in 2014 relating to the field of high-temperature superconductivity (HTS). As of 2016, more than 380 licenses have been sold in 22 different countries, including China, where ET3 claims that more than a dozen licenses have been sold. Daryl Oster and his team met with Tesla Motors/SpaceX CEO Elon Musk in late July, 2013, to discuss the technology, resulting in Musk promising an investment in a 3 mile (4.8 km) prototype of ET3’s design.

The Hyperloop Alpha concept was first published in August 2013.

It seems the timing of the Hyperloop Alpha and the meetings with ET3 indicate that Hyperloop traces back to ET3. The initial Hyperloop plans talked about using bypass fans but later engineering work took the design back into alignment with the very low-pressure ET3 designs.

The two-seater Experimental-Pod-2 (XP-2) was built to demonstrate critical safety subsystems, allowing passengers to safely travel in a hyperloop environment. The production vehicle will look radically different and seat up to 28 passengers.

It seems that the Elon Musk Boring Company will make regular loop transports. Electric vehicles and pods at lower speeds would be able to transport goods and people with cost-competitive solutions versus disrupting roads by adding additional lanes or overpasses or new highways.