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A quick recap of some of the weeks hottest stories. Eddie Sabatini reports on this edition of Autoblog Minute Weekly Recap. Audi Ford Autoblog Minute Videos Original Video mach 1 ford mustang mach 1

Audi reveals all-new R8 ahead of Geneva debut

This year's Geneva Motor Show is shaping up to be an absolutely orgy of supercars, but though there will be many that will surely outperform it, few have been as hotly anticipated as the arrival of the all-new, second-generation Audi R8. And here it is. Based around an all-new Audi Space Frame chassis, the new R8 is constructed of a higher proportion of aluminum and carbon fiber than its predecessor. The result is a frame that weighs 15 percent less at just 441 pounds – yet is 40 percent more torsionally rigid - tipping the scales at 3,205 lbs in top spec. Into the middle of that frame Audi has installed a revised version of its 5.2-liter V10, eschewing turbochargers but incorporating new technologies. While other powertrain options are expected to follow, Ingolstadt has gone straight for the top of the range at launch: the 'base' V10 model kicks out 540 horsepower and 398 pound-feet of torque to reach 62 miles per hour in 3.5 seconds and a top speed of 201 mph. The upgraded V10 Plus, however, turns those figures up to 610 hp and 413 lb-ft to reach 62 in just 3.2 seconds, 124 in under ten and a 205-mph top speed. All the while, Audi has also equipped the new ten-cylinder engine with both direct and indirect injection, stop/start and cylinder deactivation systems to cut fuel consumption by 10 percent. It also boasts dry-sump lubrication and a variable exhaust system. Power is transmitted to the road through a seven-speed dual-clutch transmission, a mechanical diff and a revised Quattro all-wheel drive system that can send 100 percent of available torque to either the front or rear axle. Aluminum wishbones suspend it all on 19-inch wheels (or optional 20s), with available variable steering and carbon ceramic brakes (optional on the V10 and standard on the V10 Plus). Underbody aerodynamics generate more downforce and a more slippery form, aided by a deployable rear spoiler (or a fixed carbon wing on the Plus model). All those tantalizing greasy bits are cloaked in fresh aluminum sheet-metal, riding on a track that's 1.6 inches wider: the whole shebang stretches 14.5 feet long, 6.4 feet wide and 4.1 feet high, riding on an 8.7-foot wheelbase. Among the myriad new technologies developed for the new R8 are the full LED headlights with optional laser high beams (where they're legal, at least, which currently doesn't include these United States).

To solve diesel problem, VW might need two fixes

Volkswagen says that a fix is on the way for its 11 million vehicles around the globe that are equipped with diesel engine software that can evade emissions tests. The problem might be far more complicated than simply creating a single solution for all of them, though. According to Automotive News citing Reuters, two remedies to cover different NOx-reducing systems could be necessary, and both potentially affect performance. Earlier examples of the EA 189 diesel engine used a lean NOx trap to reduce the harmful material coming from the tailpipe. According to experts in the Automotive News report, a software update might allow the engines to achieve compliance, but that could affect fuel economy. VW already tried this route once before the scandal came to light, but tests by the California Air Resources Board still showed the figures were too high. Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive News, a software update for this equipment might increase the amount of the substance used. Not only would that mean topping up the fluid more often, but there still could be some reduction in fuel economy. But, since the 2-liter, 4-cylinder TDI engine that sits inside the diesel vehicles first mentioned as being affected by the issue in the US don't have a urea treatment system, VW would need to install them into these cars. VW still hasn't officially outlined its solution (or solutions) to the emissions issue but is expected to soon. The automaker's long-term evasion of regulations with these diesel engines pumped vast quantities of additional NOx into the air. The substance is known to be linked with smog and acid rain. The US Department of Justice is already beginning an investigation into the company, and politicians are pushing for harsh punishments.