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Submit your questions for Autoblog Podcast #323 LIVE!

We're set to record Autoblog Podcast #323 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #323
Lamborghini Veneno

Lamborghini Aventador SV Roadster spied testing undisguised

Lamborghini typically does more versions of its V10 models than it does with its V12s. Just look at how many model variants the Gallardo spun off over its many years of production, compared to the few the Murcielago did. But with both now retired, and the Aventador on the market longer than the Huracan, it's the larger of the two that's beefing up the Raging Bull's product portfolio. We're looking at and referring to the upcoming Aventador SV Roadster. Lambo has already confirmed that the Superveloce Roadster was in the works, and we even saw a heavily camouflaged prototype undergoing testing near the Arctic Circle. But this time it's completely undisguised, without a shred of camouflage to keep it from our prying eyes. It isn't hard to guess at the technical details here, since it combines the best attributes of two existing versions: namely the LP 700-4 Roadster and the LP 750-4 Superveloce. So look for a 6.5-liter V12 channeling 740 horsepower to all four wheels through the company's proprietary seven-speed ISR transmission, just like the SV coupe. It'll be a bit heavier with its removable carbon-fiber roof panel and the requisite extra bracing, but it's doubtful the slight weight penalty will actually translate to any substantial drop in performance. Noticeably absent, however, is the big rear wing that adorns the back of the SV coupe. We'll have to hold tight to find out if the production version will get the spoiler or not, and there's little precedent to go by here since Lambo has never really offered a convertible Superveloce before. With the wing or without, the Lamborghini Aventador LP 750-4 Superveloce Roadster will likely debut at the Frankfurt Motor Show come September, with production already confirmed to be limited to 500 units – or 100 less than the existing coupe that's already sold out.

Audi R8, Lamborghini Huracan could get twin-charged five-cylinder

Engine downsizing and forced induction are some of the biggest trends in automotive powertrains today because. They offer the chance to reduce emissions and boost fuel economy, while possibly maintaining power. The shift is already happening to performance cars with turbocharged four-cylinders finding their way into the Ford Mustang, Chevrolet Camaro, and future Porsches. Now, there are rumblings of a tiny chance for a similar change coming for the Lamborghini Huracan and Audi R8. Why the new powertrain? China. While the market there might have slowing growth, it's still a major country for auto sales. The annual taxes on cars there also happen to be based on engine displacement, and there's a 40 percent rate on those over 4.0-liters, according to Car and Driver. The obvious answer to this conundrum is to build a smaller displacement, forced induction engine for the R8 and Huracan. Car and Driver points to the new turbocharged and electrically supercharged, 2.5-liter inline five-cylinder from the recent Audi TT Clubsport Turbo concept as a possible solution. Audi's e-turbo technology runs off a 48-volt electrical system and lithium-ion battery to produce a total of 600 horsepower and 479 pound-feet of torque in the prototype. With this mill, horsepower would barely shrink compared to the R8 V10 Plus and Lambo, but it actually makes more peak torque than their 5.2-liter V10s. While this is all theoretically feasible, take the possibility with a big grain of salt for now. According to Car and Driver, Quattro GmbH's Stephan Reil says that there's no work currently underway to fit the twin-charged five-cylinder, "but it has been talked about." That means such a vehicle is likely years away, if ever. In the meantime, a diesel version of the e-turbo setup is on the way the in the SQ7. Related Video: