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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:

Lotus Evija EV supercar is charging toward series production

It's almost time for Lotus to begin production of real Evijas bound for customers, but first, it must go through its final round of testing. To accomplish this task, Lotus had to prep its brand-new production facility to build the final prototypes. New photos and video give a glimpse of what the Lotus assembly hall looks like.  The Evija, which means "the first in existence," is an all-electric supercar that Lotus hopes will be the most powerful production road car ever made. The supercar uses electric motors for four-wheel drive with torque vectoring and has a battery pack rated at 70kWh. Lotus claims it has 1,973 horsepower and 1,254 lb-ft of torque, can go zero to 60 mph in less than three seconds, can do zero to 186 mph in less than nine seconds, and has a top speed of 200 mph. All of that, with a weight of 3,704 pounds.  Possibly more impressive are the claimed battery stats. The Evija, which is the first Lotus developed with new majority shareholder Geely, can supposedly fully charge in less than 10 minutes and has a range of 250 miles. With a 350-kW charger, it'll fill up in 18 minutes. Lotus says the Evija has been an extremely collaborative effort, as 20 specialist contractors and 50 experts have been on site for the past six months. They've been hard at work in the new facility, which is located next to the 2.2-mile Hethel circuit in Hethel, in Norfolk, U.K. Check out the new state-of-the-art light tunnel, the vehicle lifts, the gantry crane, and more above and below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Lotus confirms new Elise S Cup

Head on over to the Lotus website, and though the Elise isn't offered in the United States anymore, buyers in other markets can choose between numerous models: there's the base Elise, the Elise Club Racer, the Elise S and the Elise S Club Racer, and that's before even getting into the even more extreme Exige that's also based on the Elise. Track-day enthusiasts can also go for the full-on Elise S Cup R, but now the British sportscar manufacturer has confirmed a new variant.
Called the Elise S Cup, it slots in between the CR and the Cup R as an extreme performance model that can actually be driven to the track and back home on public roads. The S designation tells us it packs the 1.8-liter supercharged four that already produces 217 horsepower and 184 pound-feet of torque in the existing Elise S, Elise S CR and Elise S Cup R, but as we saw when Lotus was testing the new variant around the Nürburgring, the Elise S Cup packs some key upgrades.
It's got an aero kit - including front splitter, winglets, side skirts, rear diffuser and rear wing - that's more aggressive than other road-going models (though apparently less extreme than the track-focused S Cup R), helping to generate 145 lbs of downforce at 100 mph and 275 lbs at top speed and besting the Elise S around the Lotus test track by an impressive three seconds.