2005 - Lotus Elise on 2040-cars

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Aston Martin and Lotus each issue recalls

A pair of head-turning high performance cars are catching some attention off a different kind, in the form of safety recalls. Aston Martin and Lotus have issued recalls for the V12 Vantage Coupe and Evora, respectively.
Aston Martin's affects 169 examples of the 2009-2012 V12 Vantage Coupe. It concerns the tire-pressure monitoring system, and is less a malfunction than it is a compliance issue. The TPMS does not alert the driver until the front tire is more than 25 percent below the recommended cold tire pressure. Federal Motor Vehicle Safety Standard No. 138 states that the alarm must sound when tire pressure is "equal to or less than either the pressure 25 percent below" the recommended cold inflation pressure. To address the issue, Aston Martin will notify owners and reprogram the software, free of charge.
As for Lotus, 80 supercharged Evoras have been recalled, all built between February and September, 2011. The problem involves an engine-mounted oil feed pipe, which could rupture, causing loss of engine oil or a possible fire if the oil sprays onto a hot engine.

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:

In hindsight, Musk wouldn't use Lotus for Tesla Roadster

The world will be a different place after Elon Musk builds a time traveling device (don't ask us how we know that will happen). For one thing, the Tesla Roadster of the rewritten future will not have been built using the chassis of the Lotus Elise. Also, verb tenses will be becoming even more confusing and, possibly, awkward. "We ended up changing most of the damn car" – Elon Musk We know about the not-using-the-Lotus thing because the Tesla Motors CEO said as much yesterday at the World Energy Innovation Forum at the Tesla Factory in Fremont. The two-day event, which also offers Model S test rides and a factory tour for attendees, featured a fireside chat with the electric automaker's CEO and Ira Ehrenpreis. During the discussion, Musk revealed that if he had to do it over again, he would have built the Roadster from the ground up instead of using the Lotus Elise chassis. "We ended up changing most of the damn car, so we thought later, why did we do that," he said. Another problem with the original idea for the car was the drivetrain. At first, Tesla had meant to use the motor and other propulsive bits from AC Propulsion, only to find that powertrain didn't work well in a commercial application. Instead Tesla only licensed the reductive charging patent, which allowed some integration of the inverter and charger. Besides knocking Tesla's own early efforts, the outspoken entrepreneur took a couple swings at other technologies with quotable quotes such as: "The internal combustion engine is a ridiculous thing!" and "Current lithium ion technology is better than theoretical fuel cell limits. So, game over. Why bother with fuel cells?" Looks like there are some things Musk is not interested in going back in time and changing.