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Nuclear-powered concept cars from the Atomic Age

In the 1950s and early 60s, the dawn of nuclear power was supposed to lead to a limitless consumer culture, a world of flying cars and autonomous kitchens all powered by clean energy. In Europe, it offered the then-limping continent a cheap, inexhaustible supply of power after years of rationing and infrastructure damage brought on by two World Wars.
The development of nuclear-powered submarines and ships during the 1940s and 50s led car designers to begin conceptualizing atomic vehicles. Fueled by a consistent reaction, these cars would theoretically produce no harmful byproducts and rarely need to refuel. Combining these vehicles with the new interstate system presented amazing potential for American mobility.
But the fantasy soon faded. There were just too many problems with the realities of nuclear power. For starters, the powerplant would be too small to attain a reaction unless the car contained weapons-grade atomic materials. Doing so would mean every fender-bender could result in a minor nuclear holocaust. Additionally, many of the designers assumed a lightweight shielding material or even forcefields would eventually be invented (they still haven't) to protect passengers from harmful radiation. Analyses of the atomic car concept at the time determined that a 50-ton lead barrier would be necessary to prevent exposure.

Motor Trend pits Subaru WRX vs. Ford Focus ST

The Ford Focus ST has enjoyed a relatively calm, if brief, reign in the world of hot hatches. With nothing else in the class (in the States, at least) but the aging Mazdaspeed3 and Subaru Impreza WRX and the slow-selling Volkswagen Golf R, the Blue Oval's 252-horsepower five door has been the go-to vehicle for those that don't need the high-octane lunacy (and expense) of the rally bred Subaru Impreza WRX STI and Mitsubishi Lancer Evolution X.
Now, though, as the new Subaru WRX (it's not an Impreza anymore, though, neither is it a hatchback...) starts to arrive at dealers, the Focus ST appears to be under threat for the first time. Naturally, Motor Trend is here to figure out which one is the best, with another one of its Head 2 Head videos. Host Jonny Lieberman puts both cars through their paces, going above and beyond, quite literally, at the very end of the video.
Have a look below and let us know what you think of MT's verdict in Comments.

2015 Ford F-150 brings big aluminum to the Rust Belt [w/video]

Just when you thought you'd figured the fullsize truck market out, Ford goes and throws us a massive curve ball with the 2015 F-150. The big headline news aren't tow or payload ratings, though we're sure those figures will be fully competitive if not class leading, they haven't yet been announced. Instead, the big headline news Ford is highlighting are the truck's new aluminum-intensive structure and 2.7-liter EcoBoost V6 engine.
And with good reason - all that aluminum means that Ford was able to cut a massive 700 pounds from the truck's curb weight. That is going to cause all sorts of great things to happen to the 2015 F-150's driving dynamics, performance and fuel efficiency, not to mention its ability to haul heavy loads. For those customers worried about the strength of aluminum versus the more conventional steel, Ford is quick to point out that many military vehicles, such as the HMMWV and Bradley Fighting Vehicle, use a very similar sort of aluminum alloy in their construction.
It's also worth mentioning that the backbone, a fully boxed ladder frame, is hewn from high-strength steel. Ford says "2015 Ford F-150 is the strongest and most durable F-150 ever," for what it's worth, claiming that "torture tested" in labs and in the real world for more than 10 million miles. What's more, the truck, in disguised form, completed all 883 miles of the Baja 1000.