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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.

Kimi Raikkonen to miss rest of season for back surgery

Formula One drivers keep themselves in peak physical condition, such are the demands placed on them in order to do what they do. But otherworldly as their capabilities may be, they're still human, and that means they get injured or sick just like the rest of us.
Case in point: Kimi Raikkonen and the announcement made today by Lotus that he'll have to sit out the rest of the season in order to undergo back surgery. That means Lotus will have to find a replacement driver for the last two races in Austin and Brazil while Kimi has and recovers from the operation.
Though we wouldn't debate the legitimacy of Kimi's condition or the necessity to rectify it, the timing is sure to raise some eyebrows. Raikkonen has been at the center of a pay dispute with Lotus, and while the situation was reportedly resolved, his decision to undergo what is said to be elective surgery at this point in the season (as opposed to waiting until its end) raises some questions as to his commitment to the team he is leaving and his team's financial commitments to him in turn.

Lotus Evora GX to race in U.S. Grand-Am series

The Lotus Evora has taken many forms as a race car over the past few years, starting in 2009 with the Type 124 Endurance Racer built for the FIA GT. Since then, Lotus has developed a GT4 Cup version designed for a one-make series, the Evora GTE that currently competes in the GT class of the ALMS and the recently introduced Evora GTC.
Now, Lotus has released the Evora GX, a variation of the GTC tweaked to specifically meet the requirements of Grand-Am's new GX class that will launch at the start of the 2013 race season. While the two cars are very similar, using the same lightweight carbon fiber and plexiglass bodywork, the GX version gets a thicker U.S.-spec roll cage, a revised front splitter and bumper, a standard Grand-Am rear wing, yellow headlights and a new fuel filler system. ABS and traction control have also been removed per Grand-Am regulations.
Pricing for the Evora GX is listed at $335,000 with each one built to order, and one customer has already taken the plunge. McMahon Raceworks has placed an order and should have the car on the starting grid at the first race next year.