Conventional elements of a human machine interface like touchscreens and buttons were deliberately omitted. The personal assistant is activated via voice control, a function developed in partnership with the Silicon Valley-based start-up SoundHound. The control is based on a "Deep Meaning Understanding" technology which, much like humans, is capable of answering different questions simultaneously in the same sentence. When the wizard is activated, a color interface screen displays a graphic in the colors blue, white and red. In order to establish better visual contact with the passengers, phases in which the assistant speaks or "thinks" are accompanied by graphic animations.
The missing instrument cluster is striking in the interior. This was replaced by a head-up display on the windscreen. This not only provides the driver with driving information, but also with supplementary information such as indications of deviations, traffic jams or hazards.
The interior can be divided individually with different seating positions. The Citroën 19_19 has ergonomic controls, a head-up display with augmented reality on the windscreen, a cylindrical audio headrest and a backrest reinforcement in the seats to make the journey a pleasure. Passengers in the rear seats can lean their heads against a kind of hammock. In addition, the occupants can retreat into a personalised "sound bubble". Passengers can listen to their own music or receive messages without disturbing other passengers.
In autonomous driving mode, the steering wheel, pedals and steering column disappear. In order not to be distracted, the driver only has eye contact with the infotainment screen area in this mode.
An eye-catching element is the two lidar sensors mounted at the rooftop that complement the array of sensors enabling the vehicle to drive autonomously; besides the lidars, they include radar and camera sensors.