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We demo Audi's Traffic Jam Assistant tech on the road [w/video]

The closer automotive technology comes to making good on the promise of fully driverless vehicles, the better we see just what difficult work reaching that ultimate goal will become. That's because, unlike so many other in-car technologies that need only integration into a vehicle, truly autonomous cars will also insist on involvement with the surrounding environment, fellow motorists, infrastructure in cities and other communities and making it all work without exposing automakers to law-breaking or tremendous possible litigation. Clearly that isn't all about to happen in one go.
At CES in 2012, Audi told us about a debuting technology that would mark a significant step along the path towards self-driving cars: Traffic Jam Assistant. This year, the German automaker invited us out to Las Vegas to see the jam-busting technology in action, on a relatively busy freeway.
The Traffic Jam Assistant (we're pretty sure that name is still in Beta) promises to relieve drivers from the tedium of slow-moving freeways by taking care of braking, acceleration and staying inside of the lane - all with no input from the human behind the wheel. While still a fair step from truly autonomous driving, the goal here is to give a commuter some respite from the mechanical, time-wasting traffic jam paradigm, potentially opening up a space for productivity in the process. (Audi can't come right out and say that TJA will allow you to use your cell phone in traffic, as that's still against the law in many places, but something like that is clearly on the radar... er... LiDAR.)

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.

Audi already teasing, testing next R18 e-tron quattro

You can't debate Audi's record in endurance racing. With 12 victories at the 24 Hours of Le Mans, it comes second only to Porsche in the history books of the famous endurance race - only in Audi's case, all of those victories have come in the last 14 years, losing only twice: once to its partner team Bentley in 2003 and once to rival Peugeot in 2009. It's won the FIA World Endurance Championship in both of the seasons it's run so far, and has won championships in the European and American Le Mans Series, too.
That's quite a record to defend, and defend it Audi will with an evolved LMP1 racer next year. Only a week after tying up its second consecutive world championship, the German outfit is already back at Sebring this weekend testing the successor to the all-conquering R18 e-tron Quattro. Unfortunately as the new United SportsCar Championship doesn't include LMP1s, the only chance we may have to see it competing here in the United States will be at the 6 Hours of the Circuit of the Americas in September.
Audi is keeping mum on the details for the time being, releasing only this one photo and promising to reveal further details before the end of the month, but we can already discern a more streamlined shape, revised aero and reprofiled headlamps among the changes from the outgoing R18. One way or another, with Toyota upping its game and Porsche returning to top-level competition next season, Audi may be in for its toughest challenge yet - but you can bet it won't take it lying down. Scope out the press release below and watch this space for more.