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Audi debuts all-new R18 E-Tron Quattro with novel secondary hybrid system

This is the new Audi R18. It looks like the Bond villain of race cars (it has red running lamps), and if Audi's past is any indication, it'll prove difficult to beat in the LMP1 class of the 2014 World Endurance Championship.
The car's full name is the Audi R18 E-Tron Quattro, just like last year's car. Also like last year's car, the new R18 draws its power from a V6 turbodiesel, which powers its rear wheels, and Audi's E-Tron hybrid system, which runs its front axle. Unlike last year's car, though, this R18 has a secondary hybrid system. Audi has fitted the V6 with an electric turbocharger and figured out how to capture waste heat generated when the engine reaches its boost limit. That power can then be stored and fed back into either the turbo or the front axle's hybrid system under acceleration.
There are a number of changes to the body on the new car, forced in large part by series regulation changes. The car is narrower, particularly at the front, but it's also taller. The front end is set off by a new wing, as part of a new WEC regulation. Audi seems quite pleased about this, citing an improvement in front-end downforce and a reduction in cost. Like Formula One, the WEC contenders now have to contend with a ban on the so-called blown diffuser, which forced exhaust gases over the diffuser, creating downforce. That's necessitated some changes from Audi, although as we have no rear shots of the car, we can't tell you what it looks like.

Audi spotted testing new S4 at the Nurburgring

Where there's smoke, there's fire. Only in this case, the smoke is the upcoming new Audi A4, and the fire is the S4 spotted undergoing testing in this latest batch of spy shots. Snapped in both sedan and Avant wagon forms while undergoing testing on and around the Nurburgring – where else? – the next-generation Audi S4 will of course be based on the new A4 that's anticipated to debut in Frankfurt this September. That means MLB Evo architecture and styling that takes a page out of the new TT's playbook. But in S4 trim, it'll be altogether more performance oriented. Expect an even more powerful version of the outgoing model's 3.0-liter supercharged V6, pumping out a good 340-350 horsepower to all four of its driven wheels. That power will help it keep pace with the new Mercedes C450 AMG Sport. It won't have to take on the new C63 AMG directly, though, as that'll be the job of the next RS4 that will slot above it. But since that model may never make it to US showrooms, this will stand as the flagship of the new A4 family as far as the American market is concerned. Related Video:

Recharge Wrap-up: Tesla software suggestions, 'Audi at home' car sharing

Norwegian Tesla buff Bjorn Nyland wants the Tesla community to offer suggestions for the Firmware 7.1 over-the-air update. 7.0 includes a variety of small changes to the interface design, which Nyland discusses in depth in the video above. He offers constructive criticism, especially for things like the placement of certain data within the display. He calls upon other drivers to suggest their own changes and features they'd like to see in future updates. Nyland plans to tweet at Elon Musk once there are enough comments with hopes that Tesla will take the community's suggestions into consideration. See the video above, and read more at Teslarati. A survey of NRG eVgo stations found that drivers use DC fast charging over Level 2 charging by a ratio of 12 to 1. While businesses might prefer to install a Level 2 charger because it is cheaper and could help convince the customer to linger longer while they wait for a charge, this study suggests that DC charging could actually be a better way to attract customers. But the question is how to make DC charging sustainable for businesses with regard to the costs. Read more at Green Car Reports. Audi is launching its vehicle sharing program at luxury residences in San Francisco and Miami this week. Called "Audi at home," the program provides residents with a fleet of Audi vehicles at their disposal at either hourly or daily rates. The cars – the S7, S5 Cabriolet, SQ5, TT Roadster, Q7, and RS5 Cabriolet – are all of the Prestige trim level. Drivers needn't worry about mileage charges, tolls, fuel costs, insurance, or cleaning. Just reserve the car online, and drop it off at the property's valet when finished. Audi at home is launching at the Lumina luxury condos in San Francisco and at the Four Seasons Residences in Miami, with expansion to more cities planned for the future. Read more from Audi. Ballard is partnering with bus manufacturer King Long to build fuel cell buses in China. The two companies will work together to design and deploy the hydrogen-powered buses first in China, then in King Long's global network. "We are delighted to be working with the second largest bus OEM in the world on this important fuel cell bus design and market opportunity," says Ballard President and CEO Randy MacEwen. "Together, we are looking to optimize the design in order to improve performance, while lowering cost.