NEW After hearing thousands of last words, this hospital chaplain has advice for the living
Hospital chaplain J.S. Park opens up about death, grief and hearing thousands of last words, and shares his advice for the living.
Mercedes has unveiled a new all-electric concept car, the EQXX, that the company claims can go 620 miles (1,000 km) on a single charge. The futuristic luxury car is also made with a host of innovative recycled and sustainable materials including mushroom fibers, ground up cacti and trash such as food scraps.
Mercedes' range claim for this concept vehicle is based on computer simulated testing, not actual driving, the company said. If the claim is accurate, though, the EQXX would be able to drive farther on a single charge than a Toyota Prius hybrid can travel on a full tank of gas, according to United States Environmental Protection Agency estimates. The Prius can only manage 588 miles (946 km). It's nearly as far as the 644 miles (1,036 km) that a diesel-powered Chevrolet Suburban can go on a 28-gallon tank of fuel. It's also much farther than any other electric car currently available in the United States, according to the EPA.
Mercedes plans to demonstrate the car's range in an actual driving test this spring, the company said.
Mercedes has said it intends for half its sales to be electric cars by 2025 and, by 2030, for the brand to be virtually "ready to go all electric." Mercedes referred to the EQXX as a "technology blueprint for series production." Mercedes plans to put a car with the EQXX's battery and electric motor technology, as well as some of the car's other features, into production in 2024, said Markus Schäfer, chief technology officer of Mercedes' parent company Daimler.
The EQXX achieves its remarkable range with a battery pack that is half as large and 30 per cent lighter than the one in the Mercedes EQS, the German automakers current fully electric sedan, while storing the same amount of energy, according to Mercedes. At 620 miles, or 1,000 kilometres, the EQXX would provide about 133 miles (214 km) more driving distance on a charge than the EQS based on European range estimates for that car.
The EQXX gains those extra miles largely through efficiency, according to Mercedes. Mercedes claims the EQXX can travel more than 6 miles (9 km) per kilowatt hour of electricity. That's almost three times farther per kilowatt hour than a Tesla Model S Long Range, according to US EPA estimates. A kilowatt-hour is a unit of electrical energy stored in a car's battery so miles per kilowatt hour is like miles per gallon for a gasoline car. The figures are much lower, though, because a gallon of gasoline contains almost 34 kilowatt hours of energy.
To reach that level of efficiency, Mercedes designers focused on aerodynamics. The EQXX has a drag coefficient of just 0.17, which is sightly more aerodynamic than a properly thrown football. It's also more aerodynamic than today's Mercedes EQS which, while still very aerodynamic, has a drag coefficient of 0.20. A Porsche 911 Turbo has a drag coefficient of 0.33, according to Porsche.
The car is also designed to be as light as possible, according to Mercedes. Besides the relatively light battery pack it has wheels made from magnesium, and aluminum brakes. Springs in the EQXX's suspension are made from glass-fiber reinforced plastic instead of metal.
The EQXX's body includes a web-like subframe designed to have metal only where it's actually needed for structural integrity and crash safety. Empty spaces in the frame are filled in with a material called UBQ, created by an Israeli startup. UBQ is made from landfill waste that can include things like mixed plastics, cardboard, gardening waste and even diapers, according to Mercedes-Benz. Solar panels in the roof supply supplemental energy for things like air conditioning, lights and the car's touchscreen systems reducing demands on battery power.
Besides the UBQ filler material in the body, the EQXX also utilizes sustainable materials in other parts of the car. A leather-like material made from mycelium, the underground root-like structures of mushrooms, is used in the seat cushions. Another leather substitute, made from pulverized cactus fibers, is used elsewhere in the interior. The carpets are made entirely of bamboo fiber, according to Mercedes.
Inside, the EQXX has an enormous touchscreen that stretches all they way across the dashboard. Unlike the ultra-wide "screen" in the EQS, which is actually three smaller screens under a single sheet of glass, the one in the EQXX really is a single four-foot wide screen. To save energy, unused portions of the screen dim.
Mercedes engineers and designers have also tried to give the car's voice-control system more personality with a lifelike voice that's more emotionally expressive. The system is represented by a human-shaped avatar made up of tiny stars. The figure is modeled on the young Mercedes Jellinek, the daughter of Emil Jellinek, an early (and particularly demanding) customer of Daimler, now Mercedes' parent company.
In 1900, he commissioned a new sports car model that he insisted be named after his daughter. The car was such a success that her name later became attached to every car the company made.
Hospital chaplain J.S. Park opens up about death, grief and hearing thousands of last words, and shares his advice for the living.
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