2012 Lotus Evora on 2040-cars

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Listen to the Lotus Evora 400 make lovely noises

Automakers roll out loads of video content these days, but they often do so much editing and add so much background music that you miss out on the best stuff. With this video, Lotus shows they know what's important. This video shows Lotus's Evora 400 spending some time out on their test track in Hethel. The video is quite short and consists mostly of some onboard footage, but Lotus clearly invested in the sound recording. This Evora's 400 horsepower, supercharged V6 sounds brilliant as it screams around the course. We'll be getting a version of this car in the States this year. Lotus intends on selling the fittingly named Evora Sport 410 (for its 400 horse output) in America. It's possible we may see a lower-end model as well without the supercharger or with a smaller engine. No matter what though, great-sounding Lotuses are in our future. Related Video: Image Credit: Lotus Lotus Coupe Performance Videos engine

Lotus spotted testing more extreme Elise on the Nordschleife

If we had a nickel for every version of the Elise that Lotus has rolled out over the years, we might actually have enough spare change to buy one ourselves. And we're not even talking about the entire separate models (like the Exige and Europa) that Lotus has based on the Elise's platform or the other automakers' cars (like the Tesla Roadster and Hennessey Venom GT) that have used the same. And now Lotus appears to be testing another one.
Spotted lapping the Nürburgring, what we're looking at here appears to be the track-bound Elise S Cup R, but our intrepid paparazzi by the side of the track tell us it's missing the switches for the battery isolator and fire extinguisher. In their place, this Elise is wearing an even bigger rear wing as part of an altogether rather aggressive aero kit - not to mention a rockin' matte red wrap.
All of these telltales make us think Lotus has something extreme in the works, and we could find out what exactly it is as early as the Paris Motor Show in October, so stay tuned and watch this space.

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: