VIDEO: Hyperloop reveals how you'll travel at 1220km/h

Hyperloop Transportation Technologies (HTT) has released a short video showing how train passengers of the future will travel in tiny capsules along the Hyperlink railway at speeds of 1223km/h.

The short film was released along with these images to explain how LA-based HTT has joined forces with German tech firm Re'Flect to try and improve the commuting experience in a thin, narrow, window-less tube travelling at the speed of sound in frictionless vacuum tubes.

To curb claustrophobia within the tube, Re'Flect has developed large augmented windows that project a view of the outside world inside the cabin.

The 'fake window' technology can screen weather updates and local information for the travelling passengers.

The video shows the capsule's three-abreast seating layout either side of a narrow aisle.

Space is at a premium, but few will care when it only takes 30 minutes to travel from Los Angeles to San Francesco -- a drive that normally takes at least six hours.

The first country to benefit from a Hyperloop link is likely to be the eastern European country of Slovakia, which has signed an agreement to link its capital, Bratislava, with Austria's Vienna and Hungary's Budapest.

HTT's rival, Hyperloop One, which will also use the technology owned by Tesla Motors chief Elon Musk, is considering using a Hyperlink to move cargo between Long Beach and Los Angeles.

Hyperloop One has already carried out open-air test that saw a metal sled test vehicle accelerate to 187km/h in just 1.1 seconds, pulling 2.4g. Later this year a full test of what's believed to be a full-size capsule will be carried out.

Addressing safety concerns, HTT says its capsules will be made of high-strength carbon-fibre called Vibranium.

HTT has yet to carry out public tests of its prototypes but says its European Hyperlink railway should be completed by 2020.