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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:

James Bond Lotus Esprit submarine car headed to auction [w/video]

We've covered many cars from the movies and TV that have made their way to auction (the original Batmobile, good old General Lee and even Bond's iconic Aston Martin DB5), but this one ranks up there among the rarest and coolest. RM Auctions has just announced that the Lotus Esprit submarine car used in the James Bond film The Spy Who Loved Me has been added to the docket for its upcoming auction in London, September 8-9.
Of course, there are dozens of Bond cars floating around out there in collections, but none as unique as this Lotus, which ended a chase scene in the movie by taking a long walk off a short pier and transforming itself into a submersible. Since CGI was a meaningless collection of letters back then, the producers of the film actually built a fully functional Lotus Esprit submarine for the shoot. They hired Perry Oceangraphic in Florida to turn one of their six Esprit body shells into a fully functioning submarine, and former US Navy Seal Don Griffin was tapped for piloting duties. RM Auctions claims the Esprit submarine cost over $100,000 to build at the time, which is about $400,000 in today's dollars.
The submarine car comes with a incredible story, too. After filming in the '70s, it was shipped to Long Island, NY where it was kept in a storage unit that was paid in advance for ten years. When the storage contract ended in 1989 and no one claimed the contents, they were sold off in a blind auction to an area couple who had no idea what they were getting. The car has been shown occasionally in the years since, but its value remained purely speculative, until now. To date, the most valuable Bond car we know of is the original Aston Martin DB5 used in Goldfinger and Thunderball that sold for $4.6 million in 2010, but when the gavel falls at RM Auctions' London sale in September, we'll find out if the car nicknamed "Wet Nellie" on set can beat it.

New Lotus owners ditch ambitious five-year plan

This didn't take long. The new overlords at Lotus have reportedly scrapped the company's five-year plan. DRB-Hicom ditched the turnaround strategy, penned by ousted CEO Danny Bahar, because it believes the market viewed the plan as overly ambitious.
The new product plan will slim the number of new model lines from five to three, and Lotus will likely slash the number planned consultants in favor of relying more heavily on in-house talent. According to The Star, the move should help expedite product development and save cash at the same time.
Even so, nothing is written in stone as of yet. DRB-Hicom says the new plan will take up to a year to finalize. The company has dumped around $242 million into Lotus so far this year, and the struggling automaker may require another $121 million by 2013. Lotus all but stopped production earlier this year during a loan freeze, but the lights came back on in April. The company now produces around 44 vehicles per week.