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Notes and notations on the 2014 Rolex 24 at Daytona [w/video]

This year is the 52nd edition of the Daytona 24 Hours. The 2014 Rolex 24 at Daytona is also the first race of the year in the brand new TUDOR United SportsCar Championship (TUSCC) With the merger of the American Le Mans Series and Grand-Am Rolex Sports Car Series rewriting and revising the rules of American sports car racing right up until yesterday, we've made the journey to an intermittently wet and constantly freezing Daytona Beach, Florida with Audi to watch the new R8 LMS and every other competitor explore the limits of those rules on the track.
With a ton to cover - and a couple of videos below to watch, including some slo-mo qualifying footage and a hot lap in an R8 LMS - let's not waste time with chit-chat, eh?
Quick things to know about the classes and the leader-light system:

First impressions of Audi's next TT interior and Virtual Cockpit [w/video]

Not content to pummel CES show goers with laser lights and self-piloting vehicles, Audi has also pulled the wraps (well, some of the wraps) off the interior of its upcoming next-gen TT. While the car itself wasn't on hand for us to check out, Audi did mock up the cockpit, complete with its all-new Virtual Cockpit central display and the latest iteration of the company's Multi Media Interface (MMI).
Virtual Display is Audi's new brand name for a completely digital reinterpretation of the instrument binnacle, by way of a 12.3-inch TFT screen. Audi tells us that there are two operable modes for Virtual Display: in the standard mode, an average-sized tachometer and speedometer flank a smaller infotainment portion in the center. Infotainment mode, meanwhile, shrinks the gauges to discreet circles and allows the navigation map, audio controls, or whichever system is being operated by the driver, to fill the remaining screen real estate.
This design, says Audi, allowed engineers to slim down the size of the center console as a whole, without reducing function for the driver. We can say that it looks very impressive as a demonstrator, but we will need some time with it in a moving vehicle before we're convinced it isn't slightly more distracting that a traditional setup.

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.