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Lotus Evija's wild aero setup is detailed by chief aerodynamicist

The Lotus Evija is a car of firsts for Lotus. To that end, the company has spent a lot of time talking over the details. Today, we get to learn about the wild shape’s aerodynamics and what Lotus engineers were trying to accomplish. Richard Hill, chief aerodynamicist for Lotus takes a dive into all the details, and the video at the top of this post offers a great visual. “Most cars have to punch a hole in the air, to get through using brute force, but the Evija is unique because of its porosity,” Hill says. “The car literally ‘breathesÂ’ the air. The front acts like a mouth; it ingests the air, sucks every kilogram of value from it – in this case, the downforce – then exhales it through that dramatic rear end.” We can see what Hill means as we look at the Evija in photos. Instead of a regular front bumper, this one has pass-throughs that direct the air back into the side of the car. Lotus hasnÂ’t released the all-important coefficient of drag figure yet, but we have to imagine itÂ’s very low. The front splitter (below, left) is responsible for a few different things. The opening in the center takes in air to cool the battery pack that is mounted behind the seats. Then, the outer section of the splitter channels the air to the “e-axle” for cooling of the electrical components. And finally, it also produces downforce.  There are a couple more tunnels for air to pass through in the rear. These “holes” are likely the most distinctive design feature, especially when accentuated with the LED taillights. Hill says that these are also fully functional and help to reduce drag. “They feed the wake rearward to help cut drag,” Hill says. “Think of it this way; without them the Evija would be like a parachute but with them itÂ’s a butterfly net, and they make the car unique in the hypercar world.” On top of all these porous body structures, there are pieces that move. The rear wing can elevate upward from its flush body position and deploy into clean air above, creating more downforce. And then thereÂ’s an F1-style drag reduction system. This uses a horizontal plane that deploys from the car to make it slipperier through air. The final big piece of this puzzle is the underbody sculpting that directs air into the massive rear diffuser. This causes an upwash of air, in turn creating a massive amount of downforce. Hill sums it up quite nicely.

2015 Ram ProMaster City Tradesman First Drive [w/video]

From the perspective of a reviewer, there's a refreshing clarity to be hand when approaching a vehicle like a small commercial van. Where the inherent value equation for most vehicles is composed of both objective facts (price, fuel economy), and subjective opinions (looks, emotional response while driving), the reckoning of something like the new Ram ProMaster City is more straightforward. The light commercial van segment in the US has seen a remodel over the last half-decade, moving from paneled-over minivans to the versatile, economical, European-style boxes on wheels you see with increasing frequency today. Ford, Nissan and Chevrolet are all players here (though Chevy's City Express is essentially a rebadged version of Nissan's NV200), and though Ram's entry could be seen as late to the party, it also matches up very nicely in many of those straightforward areas of measure. Kindly, Ram brought along both the Nissan and the Ford for us to test alongside its new product, so we could get firsthand comparative impressions. The 2015 ProMaster City is roomier, more powerful and more maneuverable than its competition, though it trades those advantages for a higher price and a thirstier engine around town. We headed down to Texas where, between breaks for tacos and Topo Chicos, our goal was to see if Ram had created the new best box van in the US. Based on the already successful Fiat Doblo van from Europe, the baby ProMaster's visual transformation after its continental hop isn't radical. Ram has fitted a crosshair grille, new headlights and taillights, but largely the curvaceous, nose-forward styling remains the same. As we mentioned at the top: style is going to be very low on this list of priorities for a buyer of light commercial vans. Still, we'd rate the City as mid-pack for the options in the US; more attractive than the Nissan/Chevy twins and less so than the crisp Ford Transit Connect. (Though the optional five-spoke wheels of our test vehicle make it seem downright sporty in this group). Open the driver's side door and slide into the almost totally flat front seat, and any notion of "style" goes right out the window. Surfaces are almost exclusively black and gray, with workaday textures and frustratingly easy-to-scratch-plastics. This is a functional space though; trays, cubbies, cupholders and bins are far more numerous than you'd expect from a compact, two-seat cabin.

F1 just got a whole lot quieter, and some people are really unhappy about it

The scene is the front straight of the Albert Park Circuit at the Australian Formula One Grand Prix, and what you see on track on either side of the gentleman wearing the orange hat is a Mercedes AMG Petronas being followed by a Lotus. The first major clue, as should be obvious by the nose of the Mercedes, is that this scene was captured last year. The other major clue in the photo is the gentleman in the orange hat: he's wearing earmuffs to silence the noise. We count at least four people wearing them, and that's before the camera pans. Some F1 fans have been pleased with the sound of the new 1.6-liter V6 engines, but it appears that the majority are not; the organizers of the Australian Grand Prix are threatening to sue because of a "lack of sexiness," and F1 impresario Bernie Ecclestone has declared he was "horrified by the lack of [noise]." YouTube user krookzeh has posted a video comparing last year's 2.4-liter V8 cars on the first lap at Albert Park with the new turbo V6 cars on the first lap this year. You can compare the sounds and the number of earmuffs in the short clip below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. News Source: ESPN F1 [1], [2], krookzeh via YouTube Motorsports Lotus Racing Vehicles Videos F1 australian grand prix