2011 Lotus Evora 2+2 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:

Watch Lotus F1 team careen through a mall in Renault Twizy EVs

The Lotus Formula One Team is sticking with drivers Romain Grosjean and Pastor Maldonado next year, but it's dropping Renault as an engine supplier in favor of Mercedes power. The 2014 F1 season is barely over, though, and that mean's there still a little time left to put those marketing dollars to work, while still having a little fun, too. To that, Renault has put Grosjean and Maldonado behind the wheel of two Twizy electric cars and unleashed them on The Dubai Mall for an ad for the little buggies. The place is one of the world's largest shopping centers, and it also houses an aquarium, an ice skating rink and even a dinosaur. It's a big place, and unsurprisingly, the two F1 pilots drift the little buggies with ease around every part of the complex. Grosjean even gets some time on the ice. Check out the ad for the quirky EV in the video above. Related Gallery Paris 2010: Renault Twizy View 15 Photos News Source: Renault Middle East via YouTubeImage Credit: Related images copyright 2014 Drew Phillips / AOL Marketing/Advertising Motorsports Lotus Renault Coupe Electric Videos renault twizy Romain Grosjean lotus f1 team pastor maldonado

eBay Find of the Day: 2000 Lotus 340R, claimed only street-legal example in US

These days most of the news out of Lotus comes when it releases a lighter or faster version of the Elise, Exige or Evora. However, the stripped-out, Elise-based 340R might already show the logical conclusion of that concept, despite coming out in 2000. Now, one of the 340 made is up for auction on eBay Motors, and the seller in Fort Lauderdale, FL, claims that it's the only street-legal example available in the US.
Lotus founder Colin Chapman always had an obsession with making his vehicles as light as possible, and the 340R adhered to that adage about as closely as a street car could in 2000. These minimalist roadsters eschewed opening doors, windows and a roof in the pursuit of cutting the fat off the brand's hardly portly Elise. The company's engineers also trimmed away the fenders to give their creation a semi-open wheel design that looked as wild when new as today. For the interior, they installed two racing buckets, and the most of the rest was left in bare metal, including the pedals. All of the changes reportedly brought the 340R down to around 1,545 pounds.
Power comes from a 1.8-liter four-cylinder with a five-speed manual gearbox. The 340R is available with 177 horsepower or a tuned 187-hp version from that mill, but the seller doesn't specify which one this is. It's still a pretty fresh car, though, with just 3,577 miles claimed on the odometer.