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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.

Next Lincoln Navigator to drop V8 in favor of V6, but Ford Expedition might get both

A great many buyers fled from full-size body-on-frame SUVs to car-based crossovers in large measure to save fuel. But that doesn't mean there's still not a buying audience for more traditional truck-based utility vehicles, and those consumers doubtlessly wouldn't mind saving some dollars at the pump, too. According to Motor Trend, those shoppers might be in luck.
That's because the magazine has confirmed that Ford isn't walking away from the full-size SUV segment, and it's poised to do something about its offerings' economy ratings, too. According to MT, global Lincoln director Matt VanDyke has hinted that the next Navigator may drop two cylinders and go with a V6 model - the current model gets just 14 miles per gallon in the city and 20 on the highway from its 5.4-liter V8. The obvious fitment would be Ford's 3.5-liter twin-turbo EcoBoost V6, an engine that has spread like kudzu throughout the rest of the Blue Oval's large vehicle lineup.
Downsized turbocharged engines like Ford's EcoBoost franchise have come under fire as of late for not delivering their EPA fuel economy ratings, but their benefits extend beyond consumption - the 3.5L offers superior power and a better torque curve than the naturally aspirated V8. MT also suggests that Ford's 3.7-liter V6 could form the base engine for the next Navi - it has similar horsepower but a lot less torque than the current 5.4L. That may be less of a problem with the next generation tipped to go on a diet, which could level the playing field somewhat.

Ford builds Lightweight Concept with Fusion shell [w/video]

It's a fairly well known fact that removing weight from a car is essentially a panacea for many of the modern automobiles problems. Does it handle like crap? Remove weight. Underpowered? Don't add power; trim the fat. Need to improve fuel economy? It's diet time.
Actually executing a major weight reduction program, though, much like with human beings, is no easy task. Unlike you or I, where motivation is the issue, the prohibitive measure in trimming a car's waistline is money. Lightweight materials are expensive, with carbon fiber and carbon-fiber reinforced plastic still primarily in the domain of higher end vehicles. Even aluminum construction, pioneered on a mass-produced level by Audi and Jaguar, is only now starting to make its way into the mainstream, thanks to the upcoming Ford F-150.
With this concept, though, Ford is attempting to show that a mass-produced, lightweight vehicle isn't too far off. This is the Lightweight Concept, and while it may look like a Fusion, it weighs as much as a Fiesta. For reference, the lightest Fusion available to the public is the 3,323-pound, 2.5-liter model with a manual transmission. A manually equipped, 1.6-liter Fiesta, meanwhile, is just 2,537 pounds.