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Autoblog senior editor Greg Migliore gives the highlights from the week in automotive news.

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.

Control your Audi with your Apple TV, if you want to

Not to dash your hopes right up top, but this isn't a way to remotely drive an R8 from the comfort of your living room, or even summon it from the garage. Also, you'll need the new fourth-generation Apple TV (and a real TV hooked up to it) as well as a 2017 A4 or Q7. What Audi is offering is basically a version of the Audi MMI connect app distilled for the streaming media box. Things you can do include locking and unlocking the car, setting it to heat up or cool down before you hop in, and viewing the status of the car. (No screenshot was available from Audi, so you're looking at the iPhone version of the app up top. Just imagine it larger and more horizontal.) Who's it for? People who have the latest Apple TV, a new Audi, and would rather control the latter with the former on a big screen than a smartphone. In other words, we're not sure. We do wager that there's a decent amount of overlap between Audi drivers and tech early adopters, so someone will get excited by this. And since the new Apple TV is based on iOS, it probably wasn't too tough to port the iPhone version of the app over. Like a lot of what we're seeing at CES this week, this is likely a small step in the direction of increasing connectivity between all of the digital stuff in our lives and our cars. We'll get more excited when the family flatscreen turns into a live window of what your car is looking at. But also terrified.