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Autoblog Podcast #326

Easter Jeep Safari concepts, Shelby 1000, 2014 Cadillac CTS and Mercedes CLA45 AMG leaks
Episode #326 of the Autoblog Podcast is here, and this week, Dan Roth and Zach Bowman talk about this year's Easter Jeep Safari concepts, the 1,200-horsepower Shelby 1000 and leaked images of the 2014 Cadillac CTS and Mercedes-Benz CLA45 AMG. We wrap with your questions and emails, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Keep reading for our Q&A module for you to scroll through and follow along, too. Thanks for listening!
Autoblog Podcast #326:

NHTSA closes Ford F-Series Super Duty steering probe without recall

The National Highway Traffic Safety Administration's investigation into 2008 Ford F-250 and F-350 Super Duty pickups, which was originally opened last year, has now ended without a recall. NHTSA was looking into steering failures on some 336,000 trucks.
The issue rested with the steering gear - NHTSA received five complaints of failures - which was redesigned in 2005. According to the report on the matter, investigators "found evidence of broken sector shaft gear teeth and piston damage consistent with incidents of single event overload."
NHTSA investigators, however, "found no evidence of fatigue or material property defects in any of the fractures. Analysis of complaint rates by vehicle build month showed no patterns indicating potential manufacturing quality issues and no difference before and after Ford introduced design changes to the input shaft and sector shaft seals in July 2007 to address potential leak concerns," according to the report, obtained by The Detroit News.

Ford Explorer, Expedition next to go aluminum?

Ford made some serious waves when it unveiled the latest F-150. Instead of making its bodywork out of steel, like just about every other truck on the market, Ford went with aluminum. And you can bet the F-150 won't be the last Ford model to go with the lightweight alloy construction, either.
Our compatriots at Edmunds report that Dearborn is considering replacing two of its most popular SUVs with aluminum versions. One candidate is the Expedition, which would make sense considering that the current model (like the two preceding generations and the fullsize Bronco before it) is based on the F-150's underpinnings. Another is the Explorer, which was traditionally based on the Ranger pickup but went with a car-like unibody chassis in its current iteration. If the Explorer does go the way of aluminum, don't expect it to be a part of its very next update, which is likely due too soon for such major changes.
It would stand to reason that, if the Expedition were to go aluminum, so would the next-generation Lincoln Navigator. Ditto the MKT together with the Explorer. But those aren't likely to be the only models in contention for aluminum construction. Like any other automaker, Ford is under pressure to steadily reduce its carbon emissions and improve its fuel economy figures, prompting it to look at a whole range of measures - including more efficient engines, lower rolling-resistance tires, active aerodynamics and lightweight construction. Expect aluminum to play a big part in that equation moving forward.