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Lotus Evora 400 Roadster won't save the brand, and that's okay

There may not be a more disappointing brand in the United States than Lotus. It's not because the British brand can't make a good car. In fact, it's quite the opposite. The big problem with Lotus is that it builds highly compelling cars, but can't actually sell them in America because it can't afford to make them meet the complicated set of safety requirements required by US regulators. That makes us sad. Fortunately, there's one upcoming exception. For 2017, Lotus is bringing the Evora 400 to our shores, and a North American version of the Sport 410 has been promised. We welcome them with open arms and a proper pair of Southcombe driving gloves. But that one model line isn't going to be enough to keep Lotus in the minds and hearts of driving enthusiasts from sea to shining sea, nor will it keep the admittedly small number of US dealers happy. As pleased as we are to see reports that a Roadster version of the latest Evora is on the way, more will be needed. Lotus told Autocar that it expects the convertible to account for half of its sales here in the States, and we don't doubt that. But it's still just another version of the same automobile, and 500-700 additional sales is not going to be enough to reestablish Lotus as a legitimate sportscar contender here in America. For that, it's going to need another model line or two, hopefully at an entry-level pricepoint. A range-topping halo car wouldn't hurt, either. On the bright side, the Evora Roadster sounds like a solid step in the right direction. It's apparently just as stiff and lightweight as the coupe – "It's so simple it makes you wonder why it wasn't done six years ago," says Lotus chief Jean-Marc Gales – and that means its 400-horsepower, supercharged V6 engine will still propel it from 0-60 in 4.1 seconds and to a top speed of 186 miles per hour. Plus, the Lotus name is well established and highly respected. We don't think we're smarter than the men and women leading Lotus in the UK. So, we're sure Lotus doesn't expect the Evora Roadster to completely reverse its unfortunate fortunes in the States. The promise of a new Elise in 2020 ought to help in that regard, assuming it will be more attainable than the $90,000 Evora. In the meantime, we can't wait to feel that familiar wind-in-the-hair excitement we're sure the Lotus Evora Roadster will provide.

Lotus updates Elise with new Sport, Sport 220 models

There aren't a lot of models that stay on the market a full 20 years after their introduction. The Lotus Elise is one of those few, so to mark the occasion, the British sports car manufacturer is launching two new versions. Instead of simply dressing the Elise up with special trim and badges (which it has already done), the new models succeed the old ones by "adding lightness" and increasing performance in the classic Lotus style. Replacing the base Elise is the new Lotus Elise Sport, which cuts a good 24 pounds off the already featherlike curb weight – now down to 1,909 pounds. The 1.6-liter inline-four that is sourced from Toyota and enhanced in-house carries over with 134 horsepower and 118 pound-feet of torque for a 0-60 time of 6.0 seconds and a top speed quoted at 127 miles per hour. Fuel economy and emissions figures improve thanks to the decreased weight, but Lotus says the difference is most felt in the brand's signature handling dynamics. Those looking for a little more oomph may be more enticed by the upgraded Elise Sport 220. Taking the place of the outgoing Elise S, the new Sport 220 benefits from the same weight reduction as the Elise Sport, but packs the larger, more potent engine. The 1.8-liter supercharged four delivers 217 hp and 184 lb-ft of torque to deliver a 4.2-second 0-60 time and a 145-mph top speed. Along with the weight reduction, the new Sport models benefit from optimized throttle response, traction slip thresholds, and handling balance. They also feature new Bilstein dampers. Along with ten exterior colors available, buyers will also be able to choose between leather, Alcantara, or (our pick) classic tartan upholstery like the original 1976 Lotus Esprit S1. Unfortunately, we can't count ourselves among those potential buyers, since Lotus no longer offers the Elise in North America. The automaker is, however, tipped to bring the next generation back to these shores toward the end of this decade. And the incremental improvements that it constantly rolls out bodes well for what's to come.

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: