Dynamic sky panorama glass roofBack in the day, a sunroof wasn't necessarily power-operated. Some simply flipped up to let in fresh air. In today's cars, however, the once simple sunroof has been widely replaced by the panoramic moonroof. This feature has numerous forms, including large sliding glass panels, separate glass sheets over individual rows of seats, and huge fixed glass panes that cover the entire roof of a vehicle, as popularized by Tesla.Then there is the Lexus Dynamic Sky Panorama Glass Roof currently available on the GX SUV. It doesn't open, but it does span most of the roof and its hidden feature is an electrochromic capability. At the flip of a switch, this trick design allows drivers to change the glass roof from transparent for maximum ambient light to opaque for just a hint of the outside. Often referred to as SmartGlass, the technology is based on an electric current being applied to material suspended within the glass roof that can be configured to allow light through or block it out. In the Lexus, there's also a power-sliding shade to keep the whole thing hidden away when not in use.Executive class rear seatsLexus enthusiasts are well aware that the full-size LS has long been the Japanese automaker's flagship sedan — a platform to show off the latest luxuries and technologies. What some may not be aware of is just how luxurious the modern LS can be.Leather upholstery, genuine wood inlays, and seat cushions with heat and ventilation are assumed in this arena. But how about rear seats with power-reclining backs, ottomans that slide out to greet your feet, Shiatsu massages, and butterfly power-retractable headrests that can be adjusted to cradle your noggin at the touch of a button?With the Executive Package, a cool $19,645 extra, all of this can be yours. In the LX Ultra Luxury SUV, this feature, which is only for the passenger-side rear seat, automatically slides the front passenger seat forward, drops a footrest down, and reclines the back seat for maximum comfort. Controlled via a dedicated back seat touchpad, owners can even choose the specific areas they'd like to have massaged.Noise reducing wheelsAs a luxury carmaker, Lexus must build vehicles that offer a quiet cabin — one that keeps unwanted ambient noise from disturbing a carefully curated zen-like interior vibe. To that end, Lexus employs a wide array of well-known techniques like acoustic laminated windshields and active noise cancelling systems, not to mention ample sound-deadening insulation.But as any driver paying attention will tell you, road noise is one of the biggest offenders to a quiet cabin, so Lexus has come up with a truly hidden way to address this. Dubbed Noise Reducing Wheels, this design consists of hollow spokes and a series of resonator holes. Under load, the tires are constantly deformed, which in turn leads to changing air pressure within the tire. This ultimately results in vibrations that create sound waves, or road noise as we know it.With these special Lexus wheels, the air can enter and exit the resonator holes, which converts the sound waves to heat and muffles the noise. A tangential hidden feature that Lexus employs to keep cabin noise at a minimum are lined wheel wells. Applying a felt-like batting to the wheel wells dampens the din of the tires and road coming through the cabin that much more.Roll posture controlAlong with a quiet cabin and luxurious amenities, a comfortable ride is a signature Lexus feature. To that end, the automaker has a variety of tricks up its sleeve like adaptive dampers and e-KDSS for its off-roaders. But the Roll Posture Control system, a hidden feature that works in concert with adaptive anti-roll bars and brake pressure regulation, aims to push back on the unyielding effects of physics.Pilot your Lexus through a corner and you'll feel the outer wheels compressing and the inner wheels lifting as your body starts getting pulled to the outside. One way Lexus counters this is via anti-roll bars that work to limit roll, but they are limited in rough sections as a bump on one side naturally affects the other. Enter Roll Posture Control, a comprehensive feature that falls under the Easter egg category as you mostly can't see it and may be unaware it's operating.It blends active anti-roll bars with the Vehicle Braking Posture Control (VBPC) system to deliver flatter cornering. With the active anti-roll bars, an electric motor applies torque as needed to tamp down roll more aggressively, while VBPC adjusts braking force front-to-rear as a way to control vehicle "posture." Altogether, this is one of the more technically impressive Lexus Easter eggs.Windshield wiper service modeOne could argue that something called Windshield Wiper Service Mode is not nearly as exciting as say, Yamaha dampers or Shiatsu seat massage. But for those of you who revel in the remarkably detailed and thoughtful Lexus touches that are so seemingly obvious yet so generally unavailable across the rest of the market, we give you this nerd-tastic Lexus Easter egg.On some Lexus vehicles, the windshield wipers are tucked just under the rear edge of the hood. So, when the time comes to raise those wipers in anticipation of winter weather or for replacement of worn-out blades, you may wonder how to get said wipers out from under. Maniacs might simply grab the wiper arm and yank it up to the necessary positions. Please don't do that.A method this author employs on his non-Lexus car with the same windshield wiper design involves activating the wiper mist function for a single swipe, in accessory power mode, and then quickly turning it off once the wipers hit their apex. A very exciting dance. Lexus, however, employs a far more elegant system it calls Windshield Wiper Service Mode. Just turn accessory power mode on, then off, and push the wiper stalk up to watch the wipers go vertical and stop at the top of their own accord. Very clever.Adaptive LED lightingAs with so many of these hidden Lexus features, the cutting-edge adaptive lighting Lexus offers starts with a relatively common technology and makes it better. Take adaptive LED headlights for example. Versus halogen headlights, the LED variety offers remarkably improved driver visibility at night.Taking it a step further are adaptive LED headlights, which can move in concert with steering wheel inputs to further increase visibility when going around a bend in the dark. But Lexus has two additional Easter eggs that fall within this lighting basket. First up are the LED fog lights that automatically illuminate when a turn signal is activated to help drivers see unexpected obstacles during low-speed cornering. A certain sharp-edged bit of granite driveway curbing comes to mind as just one benefit of such a feature.Then there is BladeScan, which sounds like a RoboCop villain, but is in fact a Lexus lighting system. An upgrade for the high beams specifically, BladeScan LEDs shine light diagonally across a pair of blade-shaped mirrors spinning at 100 rpm. These mirrors control shading and reflect light into a lens that is designed to be non-blinding for other drivers. Lexus notes this technology improves the accuracy of the controllable illumination area from 1.7 degrees to just 0.7. All behind the scenes in the style of a classic hidden feature.