The four-door 2+2 has been completely rethought for a world of fully self-driving cars, omitting a steering wheel or pedals for a human driver.

Audi has revealed the Aicon, a four-door 2+2 concept designed around fully autonomous driving.Capable of Level 5 operation, the Aicon takes inspiration from a first-class airline cabin - omitting a steering wheel or pedals that would have unnecessarily occupied precious space.

The car is massive, with a wheelbase 9.4 inches longer than the Audi A8 L. Electric motors have been placed at each wheel, further clearing space typically reserved for an internal combustion powertrain.

The layout integrates an upholstered two-seat bench on the rear panel and a pair of individual front seats, which can be slid far back and ride on platforms that double as ottomans. Front seat passengers can even swivel the seat by up to 15 degrees.

Audi engineers envision exterior display surfaces to warn pedestrians and cyclists of dangerous situations, with projector modules that dynamically illuminate signals directly onto the ground to communicate with passersby that may not have a direct line of sight to the car.

Electric motors produce 349 horsepower and 406 pound-feet of torque, but with a focus on efficiency rather than performance. The company expects such a vehicle to be capable of driving for 434-497 miles on a single charge.

Audi is still working on Level 3 and Level 4 autonomous systems for upcoming production cars. A Level 5 system necessary for the Aicon is not likely to be ready in the near term.