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Audi unveils A3 Sportback G-Tron with bi-fuel power, 808-mile range

By this time next year, the Audi A3 Sportback will be offered with a variety fuel-efficient powertrains ranging from diesel to the all-electric E-Tron, but perhaps the most interesting is the all-new G-Tron model, which uses Audi's innovative carbon-natural compressed natural gas called e-gas. Previously called A3 TCNG, we first heard about this technology last year, but now Audi has confirmed that this low-emission, sustainable-fuel will debut by the end of this year on the A3 Sportback G-Tron.
To create this e-gas, a plant in Werlte, Germany uses electricity to split water into hydrogen and oxygen. As hydrogen fuel cell vehicles become more popular, Audi says that this process could also be used to produce hydrogen fuel, but to create CNG, it mixes the hydrogen with carbon dioxide to create "synthetic methane." Since it is identical to the CNG available today, Audi's e-gas can be shipped and stored using the existing CNG infrastructure. Making the whole process even greener, Audi obtains the CO2 for this process from a nearby biogas plant, which would otherwise be released into the atmosphere.
Differentiated from the regular versions of the A3, the G-Tron features a pair of tanks under the rear cargo floor holding 15.43 pounds of CNG, which can power the car for almost 250 miles. What's more, the A3's conventional gasoline tank is still in place, giving the car an addition 560 miles of range. In total, that means the A3 G-Tron has a driving range of more than 800 miles. To run on both CNG and gas, Audi made changes to the car's 1.4-liter four-cylinder engine (including the turbo, cylinder head and fuel injection system) and catalytic converter.

Startup will make your Audi A4 self-driving for $10k [w/video]

We are on the cusp of the next generation of semi-autonomous driving technology becoming affordable. Adaptive cruise control is already trickling down to the mass market, and the more sophisticated systems found on vehicles like the Mercedes-Benz S-Class are clearly coming, as well. If you're a little adventurous, live in California and drive an Audi, you might be able to upgrade to the next stage of driverless tech even sooner. A San Francisco start-up called Cruise Automation is launching an aftermarket autopilot system called the RP1 for $10,000, with deliveries starting in 2015.
The RP1 is designed for 2012 and newer Audi A4 and S4 models. Although, Cruise CEO Kyle Vogt told Autoblog in an email: "There's no reason we can't expand to other cars, and we will." The system includes a sensor pod on the roof containing cameras, radar and other sensors to scan the road ahead. It then sends data to a small computer mounted on the side of the trunk. The desired inputs are then made by actuators for the steering, brakes and throttle to control the car. A button in the cabin activates the autopilot and controls the desired speed. Not completely unlike Audi's own, developmental, semiautonomous system.
At this point, the RP1 is somewhere between an adaptive cruise control system and an autonomous vehicle. It can control all of the cars inputs and even bring it down to a complete stop and then accelerate again. However, it only works on select highways in California. "We use geofencing to limit the areas of operation to segments of highway in which we've collected enough data to ensure our customers' safety," said Vogt to Autoblog.

Car companies may need to start curbing model proliferation

Looking at the current automotive landscape, especially from German makers, you quickly get the impression that less definitely isn't more. BMW alone offers its 3 Series platform in practically every segment possible, including the regular sedan and 4 Series Gran Coupe, which would seem to be direct competitors. Porsche might be the winner, though, with 20 different variants of the 911 listed for sale on its US website. However, some of this model madness might be reaching an end as companies begin cutting back spending or shifting money to other priorities.
According to Yahoo Finance, the offerings from the German automakers are up 25 percent over the past three years to over 200 models in Europe. The peak is expected to come around 2018 at 230 separate vehicles, according to consulting company PwC.
Amazingly, BMW, which is among the poster children for this model explosion, might be changing its tune. "I'm sure there will be points in the future where we look at certain cars and say, 'Maybe we need to think differently now,'" said head of sales Ian Robertson in an interview, according to Yahoo Finance. The statement certainly sounds shocking coming from a company rumored to have 23 front-wheel-drive vehicles all using a single platform on the way.