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2015 Ford Mustang Convertible shown on Twitter [UPDATE w/video]

It hasn't yet been 12 hours since the hotly anticipated 2015 Ford Mustang has been let out into public view. After a series of evocative leaks over the course of the last days, we brought you a full deep dive of the sixth-generation pony car at the dawning of today. And yet, here we are rushing to bring you news of a new Mustang variant, already.
Be it part of a plan to keep the Mustang fervor at full boil, or a misunderstood email somewhere in the chain of command, Ford UK has unceremoniously tweeted a picture of the 2015 Ford Mustang Convertible. For a newly global Mustang, getting our first look at the droptop from the convertible-crazy British does make some amount of sense.
As for details, well, you're looking at them. Brandon Turkus reported yesterday that the Mustang 'vert would make use of a fully electric convertible mechanism, and that it would be of fabric construction rather than some kind of retractable hardtop. We see here that the fabric part is clearly true, and it does look as though Ford may still be employing the same kind of manually attached tonneau cover that exists right now. Of course, our view from this angle isn't great, and the particulars are still up in the air.

Aluminum lightweighting does, in fact, save fuel

When the best-selling US truck sheds the equivalent weight of three football fullbacks by shifting to aluminum, folks start paying attention. Oak Ridge National Laboratory took a closer look at whether the reduced fuel consumption from a lighter aluminum body makes up for the fact that producing aluminum is far more energy intensive than steel. And the results of the study are pretty encouraging. In a nutshell, the energy needed to produce a vehicle's raw materials accounts for about 10 percent of a typical vehicle's carbon footprint during its total lifecycle, and that number is up from six percent because of advancements in fuel economy (fuel use is down to about 68 percent of total emissions from about 75 percent). Still, even with that higher material-extraction share, the fuel-efficiency gains from aluminum compared to steel will offset the additional vehicle-extraction energy in just 12,000 miles of driving, according to the study. That means that, from an environmental standpoint, aluminum vehicles are playing with the house's money after just one year on the road. Aluminum-sheet construction got topical real quickly earlier this year when Ford said the 2015 F-150 pickup truck would go to a 93-percent aluminum body construction. In addition to aluminum being less corrosive than steel, that change caused the F-150 to shed 700 pounds from its curb weight. And it looks like the Explorer and Expedition SUVs may go on an aluminum diet next. Take a look at SAE International's synopsis of the Oak Ridge Lab's study below. Life Cycle Energy and Environmental Assessment of Aluminum-Intensive Vehicle Design Advanced lightweight materials are increasingly being incorporated into new vehicle designs by automakers to enhance performance and assist in complying with increasing requirements of corporate average fuel economy standards. To assess the primary energy and carbon dioxide equivalent (CO2e) implications of vehicle designs utilizing these materials, this study examines the potential life cycle impacts of two lightweight material alternative vehicle designs, i.e., steel and aluminum of a typical passenger vehicle operated today in North America. LCA for three common alternative lightweight vehicle designs are evaluated: current production ("Baseline"), an advanced high strength steel and aluminum design ("LWSV"), and an aluminum-intensive design (AIV).

Ford adding stop-start to all major model lines

Ford has gone all-in on its efforts to offer most of its new vehicles with a fuel-efficient EcoBoost engine, but the automaker is reportedly preparing to take another big step toward improving vehicle efficiency. Automotive News is reporting that Ford will soon expand the availability of start-stop technology, which was first offered - presumably the first non-hybrid vehicle, that is - on the 2013 Fusion (equipped with the 1.6-liter EcoBoost engine) as a $295 option.
The benefit of start-stop is reduced fuel consumption as it shuts the engine off at long stops, and AN quotes Ford as saying that drivers can save more than $1,000 on fuel costs over five years. Despite this, the option hasn't been popular on the Fusion thus far, but it could be more beneficial on bigger vehicles like the F-150. Ford also said that the next-gen Edge, which was previewed in concept form at the LA Auto Show, will be equipped with auto start-stop to help make the EcoBoost engines even more efficient.