1955 Ford Fairlane Sunliner Convertible on 2040-cars

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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.

8 cars we're most looking forward to driving in 2015

Now that 2014 is officially in the books, it's time to look ahead. And following our list of the cars we liked best last year, we're now setting our sights at the hot new metal that's coming our way in 2015. Some of these, we've already seen. And some are still set to debut during the 2015 auto show season. But these are the machines that keep us going – the things on the horizon that we're particularly stoked to drive, and drive hard. Jeep Renegade Not the Chevrolet Corvette Z06. Not the Ford Mustang GT350. Not the new John Cooper Works Mini. Nope, I'm looking forward to the adorable, trail-rated Jeep Renegade. And that's because I really, really, really like our long-term Jeep Cherokee Trailhawk. I do not, however, care too much for the Cherokee's looks, and I really don't like its $38,059 price tag. The Renegade Trailhawk, meanwhile, promises much of the same rough-and-tumble character as its big brother, but at what we expect will be a more reasonable price (I'm personally wagering on the baby Jeep's off-road model starting at no more than $23,000). With a 2.4-liter four-cylinder and a nine-speed automatic, it should also be a bit easier to fill than the V6-powered Cherokee. Also, I can't help but love the way the Renegade looks. It's like someone took a Wrangler, squished it by 50 percent and then handed it off to George Clinton for a healthy dose of funk. The interior, with its bright, expressive trims and color schemes should also be a really nice place to spend some time. I'll be attending the Renegade's launch later this month, so I'll have a much shorter wait than my colleagues. Here's hoping the baby Jeep lives up to my expectations. – Brandon Turkus Associate Editor Mazda MX-5 Miata Here's an uncomfortable truth: I'd rather spend a day driving a properly sorted Mazda MX-5 Miata of any generation on a winding road than I would nearly any other vehicle, regardless of power, price or prestige. It's not just that I prize top-down driving and enjoy the Miata's small size because it gives me more road to play with. I just find there's more motoring joy to be had with high-fidelity handling and an uncorrupted car-to-driver communication loop than I do with face-distorting power or grip – let alone valet-stand gravitas. But perhaps most of all, I love Miatas because they can deliver that level of feedback and driver reward at modest speeds that won't put the locals on edge or endanger lives – you can use more of the car more of the time.

We drive the 2016 Ford F-750 Tonka dump truck

The Ford F-750 dump truck stands nearly 10 feet tall and is painted bright yellow. It idles patiently yards away from Ford's test track in Dearborn, MI. "Tonka" is emblazoned on the sides. We pose the obvious question to Ford marketing manager Mark Lowrey: Why do this? "We built this truck to get attention," he replies. And indeed it does. Ford revealed the 2016 F-750 Tonka dump truck in March at an industry show, underscoring that the Blue Oval is back in the business of big trucks after years of teaming with Navistar in a joint venture. The new F-650s and F-750s start rolling off the line at a factory near Cleveland this summer, and the order bank is open now. The trucks come in regular, super, and crew cabs and offer three states of tune for the 6.7-liter Power Stroke V8 turbo diesel, plus a gasoline-fed 6.8-liter V10. Naturally, the Tonka has most powerful diesel mill, with 330 horsepower and 725 pound-feet of torque. The Tonka edition is a paint-and-sticker one-off that Ford is using as a promotional tool. You can't buy one, and it will be touring shows and events throughout the year. Lowrey notes that it calls attention to work trucks in a positive way. The general public usually only sees them when the trucks are blocking the road or making too much noise at a construction site. Tonka trucks, on the other hand, conjure up happy childhood memories. "We're going to do something where someone's going to see this truck and smile," he says. It's hard not to grin as we climb into the cabin of this monster truck. It has a 33,000-pound gross vehicle weight rating and can carry five yards worth of dirt. We're not doing anything like that today – just puttering around Ford's handling circuit inside its product enclave. The course is closed, so even though this track is better suited to calibrating Mustangs, F-150s, and well, almost anything but a dump truck, we're totally relaxed. We depress the button to release the parking brake and are off. The truck is surprisingly easy to drive. The vision ahead is excellent – makes sense, we're nearly one story off the ground, after all. The cabin is simple and cleanly laid out. It looks like a Ford truck, regardless of the size. The diesel engine has a lot of grunt. We can feel the torque. The steering is light, and we have to stomp on the air brakes to slow this thing down. We go 'hot' into a tight corner just for fun. It's not really that fast, but it raises the eyebrows of our film crew, which is set up nearby.