Audi has been working on three new concepts that are meant to preview a future in which autonomous driving is everyday technology. The Skysphere concept arrived as a crazy shapeshifting roadster, followed by the Grandsphere concept that puts occupant comfort ahead and space ahead of driving fun. Now it's time for the last of this trio to be revealed. A teaser shown to us last week informed us that the Urbansphere concept is again focused on interior space and total relaxation, and with absolutely enormous proportions, we don't think anybody will want more room inside.

The Audi Urbansphere concept measures 217 inches in length with a 133.9-inch wheelbase, a width of 79.1 inches and 70.1 inches of headroom. It should feel even more spacious than it already is, as there's plenty of glass and no B-pillar, something you discover as you approach the car on a projected carpet of red light and watch the suicide doors open.

With a focus on space and comfort, the seats can swivel outward to meet you, making entry and exit exceptionally easy. Speaking of the seats, those massive dimensions haven't been crammed with chairs. Instead, four individual seats are designed for maximum relaxation, boasting 60 degrees of reclining for the backrest, integrated armrests, and extending leg rests.

When you want some alone time while inside the car, the head area of each seat boasts a privacy screen and each seat has its own "sound zone" with speakers in the headrest area. Individual monitors in the back of the front seat further enhance individual luxury.

For those who like to be more sociable, the Urbansphere concept boasts a transparent OLED screen that "pivots vertically from the roof area into the zone between the rows of seats," with this "cinema screen" occupying the entire width of the interior. This allows for film watching or video conferencing, and the screen can also support a split view. When not in use, its transparent nature allows occupants to see out of the windshield, or it can be folded back into the roof area, which still makes the sky visible through the glass roof.

Audi collaborated with potential customers in China to help it identify new ways of making mobility better. Among these is a stress detection feature that uses facial scans and voice analysis to determine how passengers are feeling. The car then offers personalized suggestions for relaxation, including a meditation app that can be used through the personal screen and the private sound zone in the headrests.

As a vehicle focused on autonomous driving, all the driving controls can hide away when not in use and even the displays are invisible as they come in the form of projections on the wooden surfaces below the windshield. A sensor bar has been added under these projection surfaces, allowing for quick switching between content. Occupants can adjust climate controls and more using the door controls, and when their seats are fully reclined, making reaching this knob impractical, then eye-tracking, gesture control, and voice control can be used. VR glasses can also be used in conjunction with infotainment systems, including with the Holoride system.

Many of the materials used in the cabin come from sustainable sources, including the wood that has been grown close to the site. Audi says that the entire trunk can be utilized and no chemicals are used during the manufacturing process. The seat padding is made of Econyl, a recycled polyamide that can be recycled after its first use without any loss in quality.

Bamboo viscose fabric is used in various areas because it "grows faster than ordinary wood, sequesters a great deal of carbon, and doesn't require herbicides or pesticides to grow." Audi also tells us that the respective materials in the cabin are installed separately so that recycling them is even easier.

As for the powerplant, the 24-inch six double-spoke wheels (that are a reference to the Audi Avus concept car of the 1990s) are powered by a pair of electric motors, with one on each axle. These produce 395 horsepower and 508 lb-ft of torque, but no acceleration or top speed figures have been given because nobody who buys a car like this in the future will care.

The Premium Platform Electric (PPE) underpinnings of the car allow for all-wheel-drive, with the ability for the front axle to be deactivated when coasting. Furthermore, rear-axle steering promises outstanding maneuverability in traffic.

Best of all, the concept boasts 800-volt charging technology that allows the battery to charge with up to 270 kilowatts at fast-charging stations. Thus, 10 minutes of charging time allow you to recoup as much as 186 miles of range while the 120-kWh battery can be charged from 5-80% in under 25 minutes.

Audi predicts up to 466 miles on the WLTP cycle, so expect a lower range estimate on the EPA cycle. While we're on the subject of driving, adaptive air suspension further bolsters comfort.

The distinctive concept will be instantly recognizable thanks to the Singleframe grille becoming a slightly tinted transparent visor. LEDs form part of this, with the entire surface known as the Audi Light Canvas, a lighting system that can be used to communicate with other road users. A similar matrix LED surface at the rear achieves a similar effect, with these able to adapt to "the traffic situation, environment, or even the mood of the passengers."

The extraordinary new concept makes no mention of a predicted on-sale date or anything pertaining to mainstream production. Unlike many concepts that have been revealed recently with a view to market launch within the next five years or so, this concept is looking further forward and will only be viable in a future where fully autonomous driving technology is a part of our everyday lives.

That is still some way off, but it's exciting to contemplate that the Audi e-tron GT of the future could be so much more than just a car. In the future, traffic and other inconveniences will be much easier to live with thanks to cars like this, but hopefully, cars that humans are allowed to control will always be a part of the landscape too.