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Leno recalls '90s showdown with Tim Allen and his mullet

Not many of us have buddies with garages full of classic cars, but that isn't the case for Jay Leno and Tim Allen. Of course, one of the advantages for two guys with such vast collections is occasionally getting to pit their cars against each other. The two comedians did just that in the mid-'90s with a burnout battle on The Tonight Show between Allen in a race-prepped Mustang and Leno in a drag racer. After some time away from regular television, Leno is returning to the airwaves with a Jay Leno's Garage series premiering on Oct. 7 (tonight) at 10:00 p.m. ET on CNBC. Let this clip serve as another taste of what to expect for the new TV show's mix of comedy and cars. After reminiscing about the old days in a gorgeous garage, the comedians get into two modern machines to reprise the classic challenge – after a little trash talk anyway. Don't worry because the YouTube series isn't going anywhere, though.

Cosworth double-feature is XCar's a drool-worthy look back

While American fans of Ford performance cars in the '80s and early '90s were loving the 5.0 Mustang, Taurus SHO and, for those who wanted to be a little different, the Merkur XR4Ti, British fans of the Blue Oval were getting their own unique take on speed. The Sierra RS Cosworth (which was similar but not identical to the aforementioned Merkur) and later Escort RS Cosworth were the stuff of dreams with huge wings, hood vents and big power for their time and class. XCar Films aims to find out whether it is little more than nostalgia that makes these classics famous or it really is their legitimate performance. Thanks to its Formula One and racing success, Cosworth was already a well-established performance name in the UK by the time it began selling tuned engines to Ford for the Sierra and Escort. The Sierra RS Cosworth hit the scene in 1986 with a turbocharged, 2.0-liter four-cylinder engine with 204 horsepower and rear-wheel drive. Its huge wing at the back signaled it immediately as something special, and it proved to be a performance powerhouse on and off the track. When it was retired, Ford replaced it with the Escort RS Cosworth that used an upgraded version of the same engine with 217 hp, all-wheel drive and an even bigger rear wing to net yet more racing victories. XCar really gets into the spirit of the time, opening the video with the lo-fi grain of '80s and '90s TV, but to find out whether the Cossies stand up to modern scrutiny, you have to watch the video below. Stay tuned until the end to enjoy them at their best with some vintage motorsports footage. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

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.