With just three weeks remaining until the P1 supercar has its official debut at this year’s Geneva Motor Show, McLaren is teasing bits and pieces of its construction to keep the car in the public eye.

Last week we saw its F1-inspired instrumentation, and this week we’re getting a glimpse of the P1’s interior.

McLaren calls the cabin “minimalist” in its design, and the carbon fiber used throughout the interior is there for function, not just form. Like the cockpit of a fighter jet, you’d be hard-pressed to find anything that isn’t necessary for performance. There’s no wood trim, no metallic accents and no leather-wrapped dash.

In fact, “spartan” may be a better word to describe the interior than “minimalist,” and the full-on race-car-for-the-street look probably won't appeal to all potential buyers. While the driver is surrounded by everything he needs and nothing he doesn’t, the passenger is left looking at a vast expanse of carbon fiber.

To save weight, the P1 forgoes interior sound deadening and makes lightweight carpeting an available option. The racing-style seats use minimal padding, and their carbon fiber shells deliver a weight of just 10.5 kilograms (23.1 pounds) each. Though standard seat belts are fitted, anchor points for six-point harnesses are also included.

Even the seat recline function is limited, with the seats offering a 28 degree-from-vertical setting and a 32 degree-from-vertical setting, to accommodate helmeted drivers. The seat height (for driver and passenger) is determined at the time of ordering, though this can later be changed in the workshop.

Unlike a race car, however, the P1 does make concessions to civility and occupant comfort. There’s a standard climate control system, as well as a navigation system and an audio system developed specifically for the P1 by Meridian. The car’s glass canopy maximizes outward visibility, allowing precise placement while also opening up the cabin.

Even the P1’s steering wheel has been designed for performance, with its diameter determined by McLaren’s extensive experience in Formula One racing. With this much attention to detail, it’s a given that the P1 will be exceptional to drive on the track, even if it won’t be the most luxurious ride there and back.

Look for further information on the P1 to be released in the coming weeks, ahead of the car’s Geneva debut. We’ll bring you live pictures and details from the reveal as part of our complete Geneva Motor Show coverage.