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Engineering Explained’s Jason Fenske breaks down what a hemispherical combustion chamber actually is — the dome-shaped design behind Chrysler’s legendary 426 Hemi, and the reason the name became shorthand for raw American power. The real story involves valve geometry, spark plug placement, and a genuine engineering tradeoff most casual fans never learn about. Watch to see why modern Hemi-badged engines aren’t quite what the original name promised.
This 1968 Dodge Charger was hidden so deep in an old junkyard it wasn’t even visible from the road — and it might still be sitting there if a family hadn’t decided to buy it on the spot. The car’s condition surprised viewers, but the real standout was a young kid confidently correcting an adult’s Super Bee trivia. Watch to see the find and the moment that had everyone talking.
A dealership straps a brand new GoPro to the dash for one final drive in a 1979 Camaro Z28 before it leaves for a new owner the next morning — and the internet can’t decide what to focus on first. Is it the exhaust note commenters say gives them goosebumps, or the boldly colored interior that’s already become a running joke? One story buried in the comments about a similar Camaro’s tragic fate suggests there’s more riding on this handoff than anyone watching realizes.
Barefoot Ronnie Pace’s Nova backfires through its nitrous system mid-race against Flacco’s Tuning, sending a fireball out of the engine bay close enough that a nearby bystander’s lit cigarette becomes its own punchline in the comments. One viewer corrects the record on nitrous chemistry; another questions whether the car is really a genuine Yenko. Watch to see just how dramatic the explosion really gets.
In 1969, Plymouth paid Warner Bros. for the rights to a cartoon bird, its signature meep-meep horn, and an entire ad campaign built around outrunning a coyote. This commercial captures that gamble at its peak, arriving the same year the Road Runner won Motor Trend Car of the Year over cars that cost far more. It is proof that a genuinely fast car could still afford to be a little ridiculous. Watch the pitch that convinced a generation of buyers.
A 1970 426 HEMI, fresh off a four-year restoration, gets strapped to a dyno for its first real test in decades. The number on the screen isn’t the whole story — a carburetor issue quietly cost the engine 10 to 15 horsepower nobody caught until months later. Viewers who’ve spent fifty years chasing that unmistakable idle sound will understand why the correction matters more than the headline figure. So what did this elephant engine actually have left in it?
A Porsche 911 GT3 lined up against a Shelby Cobra and lost the launch so badly its clutch started smoking before the tires ever got the chance — and the comments haven’t let it go since. Buried in the thread is a genuinely wild fact about how fast an original 427 Cobra actually was in period. Watch to see the launch that started it all.
A Lowe’s delivery truck, quite possibly loaded with someone’s new washer and dryer, gets broadsided by a small red car that blows straight through a red light — and one alert driver in a white van manages to avoid becoming the third vehicle involved. Both drivers were hospitalized; neither injury turned out to be severe. Watch the dashcam footage that has viewers still arguing about which vehicle actually came out worse.
The Ford Falcon XB coupe that became Mad Max’s V8 Interceptor was built from improvised parts, including a worn-out drag car supercharger with its compressor vanes removed just to make it spinnable. Decades later, a mechanic who worked on the build showed up in the comments to explain exactly how close the whole thing came to falling apart during filming — and Australia is still campaigning to bring the car home. Watch to see why this scrappy, homemade build became one of the most beloved movie cars ever built.
A close encounter with an animal that outweighs a small car, captured in real time with a handgun instead of a rifle. This clip out of Alaska has racked up more than 14 million views and years of debate over what happened and why. Watch the moment, then see what the comment section had to say about it.
A heavily built 2017 Camaro ZL1 — upper pulley, E85, methanol, custom headers — lined up against a Dodge Demon running nothing but pump gas and the factory tune. On paper, the built car had every advantage. Dodge’s from-the-factory drag weapon had other plans. The race has kept circulating for years, and the comment section still can’t agree on who really should have won. See how the numbers stack up.
American police cars didn’t always look the part — before purpose-built pursuit packages existed, departments were just bolting bigger engines into whatever full-size sedan Detroit was selling that year. This rundown traces the path from 1960s Mopar police packages through the Chevrolet Caprice 9C1 to the car most people still picture when they hear ‘squad car’: the Ford Crown Victoria Police Interceptor. Viewers immediately argued about who got left off the list.
Tom Nelson’s crew doesn’t warn everyone in the room to keep a fire extinguisher handy for no reason — this blown, methanol-burning alcohol rail engine turns the dyno room into a genuine fire show before the pull even finishes. Between the flames shooting from the headers and the torque numbers only methanol fueling can deliver, Nelson Racing Engines built an episode viewers are still calling a torque monster years later. Watch to see exactly how close this dyno room came to needing that extinguisher.
Scotty Kilmer built his channel on talking people out of bad car decisions, so when he turns his camera on a classic and starts asking whether it is actually worth buying, longtime viewers braced for a hard no. What he actually concludes, and the driveway inspection method he uses to get there, surprised even his own audience. Watch to see whether fifty years of mechanic experience says yes or no to owning a classic.
A Cummins-powered diesel truck runs a legitimate 9.18 seconds at 147.46 mph at a Pinks All Out event at Summit Motorsports Park in Norwalk, Ohio, numbers that would embarrass plenty of sports cars. The uploader even had to clarify it was a full quarter-mile pass after skeptical commenters assumed it was the shorter eighth-mile. Viewers in the comments cannot decide whether to be impressed or defensive about a truck running these numbers. Watch the launch and see why fifteen to twenty psi of boost changes everything.