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Rolls-Royce's all-electric aircraft completes 15-minute maiden voyage

Rolls-Royce, best known in aviation for its jet engines, has taken an all-electric airplane on its maiden voyage. The "Spirit of Innovation" completed a 15 minute flight, marking "the beginning of an intensive flight-testing phase in which we will be collecting valuable performance data on the aircraft’s electrical power and propulsion system," the company announced.  Rolls-Royce said the one-seat airplane has "the most power-dense battery pack every assembled for an aircraft." The aircraft uses a 6,000 cell battery pack with a three-motor powertrain that currently delivers 400kW (500-plus horsepower), and Rolls-Royce said the aircraft will eventually achieve speeds of over 300 MPH.  This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. The flight comes about a year after the originally scheduled takeoff and about six months after taxi trials. Rolls-Royce is also developing an air taxi with manufacturer Tecnam, with the aim of delivering an "all-electric passenger aircraft for the commuter market," according to the companies. It has previously teamed with Siemens and Airbus on another e-plane concept.  Aircraft companies have been exploring electric airplanes for a number of years, as air travel and cargo accounts for an increasing amount of greenhouse gases. The World Wildlife Foundation has called it "currently the most carbon intensive activity an individual can make."  Weight is a much bigger problem for airplanes that it is for cars, however. Ford's all-electric Lightning pickup weighs 1,800 pounds more than the gas-powered model, and offers a range that's slightly under half. However, if you added 1,800 pounds to to a Cessna 206 Turbo Stationair, you'd exceed its useful load by 500 pounds before you even loaded passengers (or the pilot) — so it wouldn't even get off the ground.  The project was half funded by the Aerospace Technology Institute and UK government, with the aim of eventually creating all-electric passenger planes. "This is not only about breaking a world record; the advanced battery and propulsion technology developed for this programme has exciting applications for the Urban Air Mobility market and can help make ‘jet zeroÂ’ a reality," said Rolls-Royce CEO Warren East. This article by S. Dent originally appeared on Engadget. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Top horsepower-per-dollar cars in 2017

Bang for the buck. That quasi-scientific statistic is bandied about by motor heads everywhere from classrooms to barrooms, though the truth of the matter is that it's exceedingly complex to measure. A fair performance-per-dollar index would include something like cross-referencing MSRP (Manufacturers Suggested Retail Price) with point-to-point times on a track or driving route, which is obviously hard to do comprehensively. But, for the sheer joy of talking about cars and playing with a big spreadsheet, there's always the horsepower-per-dollar index, which is more straightforward, albeit hilariously flawed. There are vagaries even with this simple formula, of course: MSRP for vehicles can change at a moment's notice, to say nothing of the bottom-line shifting that happens with local deals or showroom negotiation. For this list we're running with the straight MSRP wherever possible, and as recently reported as we can get it. All the vehicles on this list are 2017 models, and all trims are reported where the lowest price and differing power levels intersect. Some choices were made for personal preference and some for sanity, avoiding things like all 48 trim levels of the Ford Transit, all with the same horsepower). If this list were a simple top ten, or even a top fifty, you'd be bored to tears with all the red, white and blue that is represented. Following perfectly with conventional wisdom, American cars really do lead the world where hp/$ is concerned. So, for the sake of variety (and the sheer joy of seeing a minivan 'win' one round of this thing) I've sorted out some top five and bottom five lists for broad power categories. Let's dive in. Less Than 100 Horsepower Okay, okay, this is hardly a category we'll grant you. But we've often tried to click off all the sub-100-hp cars on sale in the US, and making this list gave us an excuse. It also illustrates that none of these smallish vehicles bring cheap horsepower to the table - for that you'll need a motorcycle. The segment-leading Chevy Spark (above) asks just over $139 for each hp, and that Smart Fortwo Electric Drive has hp on sale for about the same price as its very distant family cousin, the Mercedes-Benz SL65 AMG (insert your favorite Smart joke here... we know you want to).

Check out Rolls-Royce's totally awesome AWD mule

No, this isn't just a super badass Phantom. The car you see here – codenamed Project Cullinan – is an early development mule for the new all-wheel-drive suspension system that will eventually be found in Rolls-Royce's upcoming SUV. It's made up of a shortened Phantom body, looks totally murdered out, and has a huge freaking wing on the back. We love it. Of course, Rolls-Royce properly poo-poos any similarities between this mule and the eventual production model. "The body may hint at the size of the new car, but it features no design aspects of the eventual high-sided, all-terrain motor car announced by Rolls-Royce Motor Cars in February this year," the company said in a press release. The end goal of this mule is to create "a final all-wheel-drive system that delivers Rolls-Royce's hallmark 'magic-carpet' ride not only on the road, but off-road too." Screw the SUV. We'll take one as-is. PROJECT CULLINAN BEGINS DEVELOPMENT PROGRAMME AS ENGINEERING MULE APPEARS IN PUBLIC In its open letter on 18 February this year, Rolls-Royce Motor Cars gave an undertaking to inform stakeholders of the progress of Project Cullinan. Keeping this promise, Rolls-Royce Motor Cars has today published photographs depicting the first key milestone in the vehicle's development programme. The photographs are of the first engineering mule, which will be seen on public roads this week. This early engineering mule, based on a shortened Phantom Series II body, has been created purely to begin the development of an all-wheel drive suspension system that will deliver a ride that will be Effortless ... Everywhere. The body may hint at the size of the new car, but it features no design aspects of the eventual high-sided, all-terrain motor car announced by Rolls-Royce Motor Cars in February this year. The mule rides on the first iteration of an all-new suspension that will assist Rolls-Royce engineers in developing a final all-wheel drive system that delivers Rolls-Royce's hallmark "magic-carpet" ride not only on the road, but off-road too. The first series of tests will focus on Project Cullinan's on-road behaviour from suspension throw to high-bodied stability, and will test the new suspension across all types of international road surface specification at test facilities, as well as on public roads. Test surfaces will include; Belgian Pave, cobblestones, corrugated concrete, noise development and measurement surfaces, resonance road, and acceleration bumps.