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Submit your questions for Autoblog Podcast #325 LIVE!

We're set to record Autoblog Podcast #325 tonight, and you can drop us your questions and comments 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 #325
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Kimi Raikkonen fastest in first Belgian Grand Prix practice

SPA-FRANCORCHAMPS, Belgium — Ferrari's Kimi Raikkonen lapped fastest in first practice for the Belgian Grand Prix on Friday but Mercedes, and title contender Lewis Hamilton, still looked every bit the team to beat. A four-time winner at Spa, and with a contract extension for 2018 announced earlier in the week, Raikkonen lapped the longest track on the calendar with a best time of 1 minute 45.502 seconds. The 37-year-old Finn's time was set on the quickest ultra-soft tires, however, while Hamilton — preparing for his 200th race start — was second-fastest and only 0.053 slower on the soft compound. Hamilton was 0.092 faster than Ferrari's world championship leader Sebastian Vettel, with the German third on the timesheets and also setting his time on the quickest but least durable tire. Vettel leads Hamilton by 14 points with nine races remaining. Red Bull's Dutch teenager Max Verstappen, Belgian-born and attracting a huge traveling support of orange-capped fans, was fourth fastest with Australian team mate Daniel Ricciardo fifth. Hamilton's teammate Valtteri Bottas, who bumped into the tire barrier after going off across the gravel and damaged his front wing, was sixth fastest. The session was halted after 15 minutes when Brazilian Felipe Massa, who missed the previous race in Hungary after feeling dizzy in practice, crashed heavily into the tire barrier at turn seven out of Les Combes. He was taken to the medical center for checks, before returning to the pitlane, with his team facing a long job rebuilding the car. The session resumed after a 10 minute stoppage. Williams said the chassis would have to be changed and the team still hoped to get the car back out on track for some of the day's second session, even if that looked like being optimistic. Fernando Alonso suffered a lack of power in his McLaren, but still ended up 13th fastest. Belgian team mate Stoffel Vandoorne, who will start his home race last on Sunday thanks to a 35 place penalty due to a power unit change, was 10th. Reporting by Alan BaldwinRelated Video: Image Credit: Reuters Motorsports Ferrari McLaren Mercedes-Benz F1 Lewis Hamilton Sebastian Vettel Kimi Raikkonen Max Verstappen Valtteri Bottas belgian grand prix

Mercedes-AMG to phase out 5.5-liter V8 after next year [UPDATE]

UPDATE: A previous version of this story indicated that AMG's 6.0-liter twin-turbo V12 was still mated to a five-speed automatic transmission, however the latest models (including the S65 AMG sedan and coupe, SL65 roadster and G65 sport-ute are equipped with the newer seven-speed unit. Mercedes also reached out to point out that the 5.5-liter engine will be phased out gradually, not overnight. There's a lot to love about AMG's 5.5-liter twin-turbo V8. It produces as much as 577 horsepower and 590 pound-feet of torque, and delivers blistering performance to even the heaviest of vehicles. But try not to get too attached, because like its 6.2-liter, naturally aspirated predecessor, it's not long for this world. The latest word comes from Autocar, which reports that Mercedes will release the last applications for the 5.5 biturbo within these next two calendar years in the new GLE63 AMG and upcoming S63 AMG convertible. After that, even though it was only introduced in 2011, it will be phased out. Fortunately Affalterbach has a worthwhile successor already in place in the 4.0-liter twin-turbo V8 from the Mercedes-AMG GT. The smaller powerplant, already in store for the new C63, is already producing 503 hp and 479 lb-ft in S spec. That's still shy of the larger unit's output, but where the 5.5 is nearing the end of its production cycle, the 4.0 is just starting out. Of course the 4.0-liter biturbo isn't the only engine AMG is making these days. Smaller models (based on the front-drive platform) employ the 45-designation, high-output 2.0-liter turbo four. Models at the very top of the lineup, however, use a 6.0-liter twin-turbo V12 that may be a dinosaur, but with 621 hp and 738 lb-ft of torque on tap, still can't be beat.