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2015 Rolex 24 at Daytona gallery of Saturday afternoon and night racing

The 2015 Rolex 24 at Daytona only has a little under five hours left to run and we won't write anything in here to spoil it. Instead, we're just going to leave you with a gallery of 169 photos from the Saturday afternoon and overnight action before we come back with a race recap. Enjoy! Featured Gallery 2015 Rolex 24 at Daytona mid-race action View 169 Photos Image Credit: Copyright 2015 Jonathon Ramsey / AOL Motorsports Audi Racing Vehicles daytona night race

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.

VW recalls 220,000 Atlases, Atlas Cross Sports for airbag defect [Updated]

[Update: Audi of America has confirmed that no U.S. models are among the recall population for plug-in hybrid fire issue.] Volkswagen has issued yet another recall for its Atlas SUV, this time for side airbags that may not deploy correctly in an accident due to a problematic connection in one of the vehicle's wiring harnesses. The campaign covers 222,892 Atlas and Atlas Cross Sport models built for the 2019-2023 model years.  The issue stems from a connection with the wiring harness that runs from the A-pillar into the door. VW says that harnesses produced by one of its suppliers were not built with additional measures to prevent movement at the connection point. Small movements can cause abrasion of the metal contacts which could lead to a whole host of electronic misadventures, including the potential for airbag deployment to be delayed in a crash.  "Micro-movement of the wire harness (terminal A-Pillar to front door) can result in damage to the wire terminal surface. Damage to the surface can [result] in fretting corrosion which may cause sporadic interruption in the electrical connection to the components of the front door," VW said in its defect notice. "The airbag warning light may illuminate if a malfunction is detected. Other symptoms of a sporadic interruption of the affected electrical connection can be: inadvertent rolling down windows, inadvertent park brake engagement at low speeds (below approx. 3km/h or 1.8mph), warning regarding faulty door sensor," VW said.  Not every model built within the range defined above is subject to the recall; terminals from other suppliers were manufactured with the necessary safeguards in place. If you own a 2019-2023 Atlas or Atlas Cross Sport, keep your eyes peeled for a notification from VW regarding the campaign, likely some time in early-mid May.  PHEV problems Across the Atlantic, the VW Group mothership confirmed that it will recall more than 100,000 plug-in hybrid models worldwide to address a fire risk. The recall was launched in response to 16 reported incidents of fires stemming from insufficient insulation of the PHEV battery pack that allows the engine cover to make contact if it is not completely secure. If that happens, the heat from the battery can ignite the engine cover. The recall will cover PHEVs build by VW, Audi, Seat and Skoda, Reuters reports, including the VW Passat, Golf, Tiguan and Arteon — plug-in variants of which are not sold in the United States.