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Audi planning A9 electric vehicle to challenge Tesla

It looks like we have another "Tesla Fighter" on our hands. Various higher-end automakers have announced plug-in luxury sports sedans that would likely take on the California-based electric-vehicle maker, and Audi now appears to have joined that group. The badge is A9, and it may be available to the public by the end of the decade, UK's Autocar reports. The Audi A9 E-Tron could be a beast. The car will deliver 429 horsepower via three electric motors – two driving the front wheels, one driving the rear. The sedan will be equipped with a 95-kilowatt-hour battery that will enable a 310-mile single-charge range (on the more generous European driving cycle). Lots of parts and features will be shared with the battery-electric SUV Audi is also planning. Where it really gets fun is the prospect of the sedan having "torque vectoring," in which power can be shifted from side to side in order to boost handling. Additionally, the car could have a wireless, inductive charging option as well as an auto-parking feature for positioning over the floor-mounted charging module. No word on how this car will be priced, but we're guessing quite high. Audi CEO Rupert Stadler has gone on record saying that the German automaker wants to have three all-electric models available to the public by 2020, though hasn't said anything specific about a high-end battery-electric sedan that would be geared to take on the Tesla Model S. The company did introduce its E-tron Quattro concept last year, though, and Audi has said it aims to have as much as 25 percent of its sales be of the plug-in variety by 2025. There's a chance for that if the A9 e-tron is as enticing as it appears to be. Related Video:

Forza 5 documents bringing Audi R18 E-Tron and Le Mans to game

Forza Motorsport 5 is set to come out on November 22 alongside the all-new Xbox One. As part of the launch lineup for a big new system, it shouldn't be a shock that Turn 10 Studios, the maker of the Forza series is going all out in promoting its new game. That's meant making interesting partnerships, like the one it enjoys with Top Gear.
Perhaps a less talked about alliance is between Audi and Turn 10. It's put on full display here, though, as Turn 10 documents the process of building Forza Motorsport 5 alongside Audi's quest at Le Mans, with both sides talking about what it takes to make a game and racing team work (they aren't as different as you might think).
There's also quite a bit of Le Mans and Audi-specific content coming with FM5. As with previous iterations of Forza Motorsport, gamers will have access to both the old and new Circuit de la Sarthe (the most notable difference between the two being the presence of Chicanes on the Mulsanne Straight). Audi will also be volunteering several of its vehicles for the new title, ranging from racers like the R18 e-tron Quattro and Audi Sport R8 to production rockets like the 2013 R8 V10 plus, 2006 RS4 and the 1983 Sport Quattro.

Audi is working on a suspension that gets power from bumpy roads

Regenerative brakes aren't new. They're on virtually every hybrid and EV, and they're even starting to pop up on traditional gas-powered cars, like with the i-ELOOP-equipped Mazda6. But even with these systems, cars can get more efficient, and Audi thinks it found yet another source of wasted energy. The source? The suspension. The idea is to turn the kinetic energy that goes into the dampers into usable energy instead of as waste heat. Audi isn't the first auto company to come up with regenerative suspension – nearly three years ago, ZF introduced its GenShock technology, which used a valve attached to traditional, oil-filled hydraulic shocks to recapture kinetic energy from movement caused by bumps in the road. Audi's prototype technology, which it calls eROT, replaces traditional dampers with horizontally oriented electromechanical rotary dampers. eROT is apparently short for electromechanical rotary damper. Neat. In testing, eROT recovered an average of 100 to 150 watts on a typical German road, three watts from a fresh piece of pavement, and 613 watts on a rough stretch of tarmac (wattage is calculated as power over time, so this is actually the rate at which the system harvests energy). The dampers channel that energy to a tiny, 0.5-kWh, 48-volt battery. The prototype is claimed to cut CO2 emissions by three grams per kilometer (4.8 grams per mile), while the company believes a future production version could save up to 0.7 liters of fuel per 100 kilometers of driving. Converting the savings to American miles per gallon isn't easy, so we'll use a practical example. In the US, the Q7's supercharged 3.0-liter V6 returns a combined rating of 21 miles per gallon, which works out to 11.2 liters per 100 kilometers. Apply eROT's 0.7L/100km savings, and the Q7's economy would improve to 10.5L/100km, or 22.4 mpg, a 1.4-mpg improvement. That's not huge, but because math, 0.7L/100km is more dramatic on a more fuel efficient vehicle – taking an A3's 27-mpg combined rating and adding eROT would drive efficiency up 2.4 mpg, for example. There are a few other big benefits beyond fuel and emissions savings – Audi claims eROT provides a more comfortable ride than traditional active suspensions, because engineers can tune the compression and rebound strokes independently of each other. Beyond that, the horizontally oriented rear suspension geometry means more cargo space, since the dampers don't poke up into the cabin like they normally do.