2024 Lotus Emira First Edition on 2040-cars

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This is how ground effects work in a nutshell

There are two ways to generate downforce. One is with all manner of wings and spoilers on the surface of the vehicle. The other is with ground effects. One you can clearly see, the other remains something of a hidden mystery. Fortunately, the good folks at Lotus and Goodwood are here to dumb it down for us non-engineer types. It's called Bernoulli's Principle, named after Swiss physicist Daniel Bernoulli who literally wrote the book on the subject way back in the 1700s. Countless engineers have spent their careers focused on its study and application, but the crux of the matter is that, as the speed of air (or other "fluid") increases, pressure decreases. Play with the air's increasing speed and decreasing pressure just right and you can generate downforce underneath the body of a car without significantly increasing drag as you would with surface spoilers. For evidence of how Bernoulli's Principle applies in practical terms, just look at the last Ferrari to pack a turbocharged V8 in the middle and the latest one. The F40 had a giant wing on the back, where the 488 GTB has none. But because the 488 uses underbody aerodynamics (or "ground effects"), it generates significantly more downforce than the winged F40 ever could, and at lower speeds. Ferrari, however, was not the first outfit to harness the power of ground effects. Lotus did with the legendary 79 that Mario Andretti drove to the world championship back in 1978. That was the genius of Colin Chapman, and to explain how it all works in layman's terms, our friends over at Goodwood Road & Racing brought in Colin's son Clive Chapman, head of Classic Team Lotus, to put together the video above. Related Video:

Race Recap: 2013 Bahrain Grand Prix follows the template of this year and last [spoilers]

The sand, the wind, the penalties, the contact and the one crash - all of them collided to make the Bahrain Formula One Grand Prix a surprise affair from day to day and lap to lap. Oh, and did we mention the tires? Pirelli made a last-minute swap after the amusement park ride that the Chinese Grand Prix turned into with the soft compound tire, and brought medium and hard compounds to the desert. That didn't stop things from falling apart for some teams - literally - and that didn't stop the one team that seems to love the hard compound Pirelli tire.

Lotus chief promises upcoming SUV will be true to brand

Lotus isn't the first sports car manufacturer getting into the crossover game. It's just the latest, and perhaps most surprising. That's because the British automaker made its name by keeping things as light as possible, and SUVs are anything but. Still, the company's chief executive is adamant that the crossover will be very light... and very Lotus. Speaking with TopGear.com, Lotus CEO Jean-Marc Gales asserted, "If Colin Chapman was alive I believe he would have done" a crossover. That's a pretty bold claim made in the name of the man known for his featherweight sports and racing cars, but Gales may not just be blowing hot air. "It will be the size of a Porsche Macan but only 1600kg, and will be the most agile and fastest of that class on a track," Gales told TG. "It's logical for us to make one in the Macan segment - the rest are all two tons, even a BMW X3. They take a normal car platform with big tires and brakes and transmission. We will use a four-cylinder engine." Keeping it light will be a vital part of the equation for Lotus, but it won't be all. It'll also have to bring up the quality, because quirks that owners might forgive in a sports car might not be tolerated to the same extent in a more mainstream product. Fortunately, Gales has been working on that ever since he took charge of the company just last year. He'll have that much more time to get it right by the time the crossover hits the Chinese market in 2019 or 2020. The vehicle is being designed principally for that market, and will be built locally. The design and engineering work is being carried out, however, at the company's headquarters in Hethel, England. Two designs are reportedly being considered, each with signature Lotus design traits to convey the image of light weight, with a profile reminiscent of the Elite four-seater from the 1970s. If the model proves a success in China, it could make its way back to the UK and Europe, though North American availability remains a question mark, and Lotus spokespeople have been cagey at best about plans to expand their US offerings. Gales also told TG that the crossover will end up only helping the company's sports car offerings, not hurting them. Increasing its quality will be one part, but developing more robust components (like air conditioning systems) will be another. At very least, it will help Lotus stay profitable and fund future sports car projects that may not be possible based on their own revenues alone.