1975 Porsche 914. 1.8 on 2040-cars

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Watch the incredibly complicated operation of Porsche's new targa roof

Despite Porsche having claimed the name, targa tops are nothing new. In addition to the semi-roofless version of the 911, plenty of cars in the past have used removable roof panels - the new Corvette Stingray has one (as have prior generations), and this type of open-air experience has been available on past vehicles like the Pontiac Solstice Coupe and Honda Civic del Sol.
But when Porsche took the top off its brand new 911 Targa here at the Detroit Auto Show, it was indeed cause for pause. Simply put, this is one of the most complicated and intricate electronic roof panel removal techniques we've ever seen, save perhaps, for the setup found on the Japanese-market Civic del Sol from the 1990s.
We won't spoil the video for you, but basically, rather than just the roof panel coming off, the entire rear glass area lifts away the body in order for the small section over the passenger compartment to slide back. This has to be incredibly expensive to repair once it inevitably breaks. And we highly doubt you'll be able to operate this mechanism at any speed.

VW adding particulate filters to gas engines

Volkswagen is working hard to overcome the PR disaster that is its diesel emissions scandal, and part of its efforts is focusing, weirdly, on petrol engines. Starting in June 2017, the embattled German automaker will add particulate filters to the gas-powered Volkswagen Tiguan and Audi A5. The change will eventually impact nearly every direct-injected gas engine the VW Group makes. Audi? Particulate filter. Seat? Particulate filter. Even Bentley is going to get the tech, all in a bid to reduce soot emissions by 90 percent. In fact, by 2022 VAG expects 7 million of its vehicles to boast the emissions-cleaning tech, which has long been a fixture on diesel engines. "Following increases in efficiency and lower CO2 output, we are now bringing about a sustained reduction in the emission levels of our modern petrol engines by fitting particulate filters as standard," Volkswagen Group research and design boss Dr. Ulrich Eichhorn said in a statement. "In the future, all models will be equipped with the latest and most efficient SCR catalytic converter technology." VW's initial rollout focuses on the 1.4-liter, turbocharged Tiguan and the 2.0-liter, turbocharged A5. Considering the popularity of the 2.0-liter across the VW range, we'd expect it's only a matter of time before VW expands its particulate filters tech to additional gas-powered vehicles. Related Video:

Techart tastefully tunes Porsche 911, Cayenne

German tuning haus Techart is making a big showing at the 2016 Geneva Motor Show, introducing modified versions of a number of Porsche products. At the fore, we have the new, all-turbo 911 range. Techart has turned its hand to both the turbocharged 911 and the new 911 Turbo (this will get less confusing, right?) with a range of upgrades covering performance and aesthetics. Techart has boosted the Carrera S from 420 horsepower and 368 pound-feet of torque to 460 ponies and 413 lb-ft of torque. The Turbo S gets a bigger boost, going from 580 hp and 553 lb-ft of torque to 640 hp and 649 lb-ft. It's not clear how Techart has made these gains, aside from the company's "Techtronic" engine management. Surprisingly for an aftermarket tuner at Geneva, Techart's exterior treatments are downright tasteful. There are new front and rear clips and a selection of rear wings, helpfully called Rear Wing I and Rear Wing II, while the diffusers and side skirts are also swapped out. We also dig the center-exit exhaust and its four meaty tips. On the opposite end of the equation, Techart is also modding the Cayenne range. The new Magnum Sport treatment can be applied to the base diesel-powered Cayenne and Cayenne S, the gas-powered GTS, and the Turbo with varying degrees of performance, but it's the force-induced Cayenne we're most interested. In its most potent form, the turbocharged V8 can be boosted from 520 hp and 553 lb-ft of torque to 700 hp and 678 lb-ft. At this level of performance, the Cayenne's sprint falls from 4.4 seconds to just 4.1. That ties the stock Cayenne Turbo S, but it's worth noting the Magnum Sport will do 183 miles per hour to the factory model's 176. Like the 911, there's a slew of aesthetic upgrades regardless of which Cayenne your Magnum is based on. The full body kit isn't as tasteful as the 911. The overall look is far more aggressive and dare we say aftermarket, with plenty of carbon-fiber accents, a very low ride and a serious wide-body look. In particular, the new front and rear fascia present a much more imposing appearance. There's also a carbon-fiber hood, because the aftermarket. We've snapped Techart's modified Cayenne and 911 on the floor of the 2016 Geneva Motor Show. And if you scroll down, there's also the official galleries and press releases for both models. Have a look, and register your opinion in Comments. Related Video: TECHART Personalization for the new Porsche 911 models.