Unlike other translucent blocks such as ice, stained glass and tinted glass, water shows the opposite sides of its external planes when viewed from within and from outside. The best way to ventilate quickly is to open windows on both sides of your house, called “cross ventilation,” so a breeze can flow from one end to the other. It’s a cheap and easy way to keep yourself cool while stuck in traffic — and to save the Earth’s atmosphere in the bargain. But the Environmental Protection Agency (EPA) says the average family could save as much as 13,000 gallons (49,210 liters) of water a year if they did. A higher daily average than 0.1 ppm (100 ppb, 0.2 mg/m3) is not recommended and can damage the lungs and olfactory bulb cells directly. The compressed air then runs four air-bearing turbochargers, which according to the company can reach speeds of one million revolutions per minute and don’t need maintenance for 100 years.

Conditional tense, since it might one day be a real car? But the Magnetic Air Motors car wasn’t even entirely the first of its kind. If you want to get really nerdy about it, it could even be referred to as a kind of “historical present,” which is often used in books to make ancient events seem current and fresh. An open valve is a straight pipe from one to another while a closed valve will use some kind of ball or other mechanisms to obstruct the flow. The choices and preferences for seating classes differ from one individual to another. First, at the turn of a key or the push of a button or the swipe of a card — or however this car was supposed to start — a 12-volt battery (similar to the one in your car) sparks the vehicle to life. But the claims of unlimited driving range and no maintenance for a century make it seem like it’s creeping into perpetual motion territory, which should make most of us turn a skeptical eye. In theory, since a prototype was never seen in public, the Magnetic Air Car would never have to be refueled, would have unlimited driving range, and thanks to a water filtration system that was said to clean the air as it was recycled within the system, any air leaving the magnetic air car would have actually been cleaner than the air that went into it.

The shop should have a clean appearance. Schwartz, Ariel. “Magnetic Air Car Could Be Ready by 2010.” Clean Technica. So effective are these simple arrangements that, in the few minutes required to kindle the mass of coals in the furnace to a cherry-red, the mass of fire-brick in the superheater becomes white-hot and ready for use. It is a versatile product that you can use throughout your household, like in your laundry room, bathroom and kitchen. This process takes place within a closed loop consisting of coiled tubes, so that it can be repeated over and over. In the case of air-conditioned seats without a cooling unit, where the driver or passenger is cooled by the circulation of unrefrigerated air, the entire process requires less energy than is used to run a typical light bulb. Lustbader, Jason A. “Evaluation of Advanced Automotive Seats to Improve Thermal Comfort and Fuel Economy.” National Renewable Energy Laboratory. National Renewable Energy Laboratory. Constant input of energy is required to compress the gas, which is why air conditioning uses up so much of your fuel. Breau, Amy. “Why Salt Makes You Thirsty.” Indiana Public Media.

Studies have linked the use of air fresheners to respiratory issues, reduced lung capacity and asthma aggravation due to the combination of certain chemicals and ozone-forming formaldehyde. At low speeds, scientific studies reveal that vehicles burn fuel inefficiently and pollute more per trip. And when you flip open the lid and see the glowing Apple logo, you’ll know there’s more than three decades of Apple innovation inside. But the competition has recently started heating up for Apple. U.S. Patent and Trademark Office. Magnetic Air Motors did indeed file a patent for this propulsion system in 2008, and the patent was granted in 2011. In other words, there’s still a slim chance this thing could leave the realm of vaporware and become (at least) a prototype in the real world. But here’s the funny thing about vaporware: It’s almost like Freddy Kruger and his claws or Jason and his machete; it can always come back when the time is right.