The Digest.

MythBusters · Video summary

MythBusters Admit Their Wrongs and Test Everything Again | MythBusters

MythBusters Adam and Jamie revisit past experiments and tackle fan-suggested retests, including the effectiveness of hollow spike strips, the difficulty of holding a grenade, and whether video games can improve real-world skills.

MythBusters Admit Their Wrongs and Test Everything Again | MythBusters Watch on YouTube ↗

Key takeaways

Chapters

The digest

MythBusters Adam Savage and Jamie Hyneman are no strangers to blowing things up, testing outlandish scenarios, and, occasionally, admitting they might have missed a detail or two. In a special episode dedicated to "Unfinished Business," the duo dives into a mountain of fan mail, re-examining myths they previously tackled and exploring new angles suggested by their dedicated audience. From the tactical effectiveness of spike strips to the surprising difficulty of holding a grenade, and even the potential for video games to teach real-world skills, Adam and Jamie put everything to the test once more.

The Power of Hollow Spike Strips

One of the most anticipated retests involves the infamous spy car episode and its tire-bursting tacks. Fans pointed out that while the original tetrahedral spikes replicated movie designs, they would be far more effective if they were hollow, allowing air to escape more efficiently. Adam, ever the meticulous builder, takes on the challenge of fabricating 50 hollow steel spikes. His assembly line process, involving bending, cutting, welding, and even painting them bright pink for visibility, highlights the careful engineering behind seemingly simple tools. The tetrahedral design ensures one point is always facing up, ready to pierce a tire. The real-world test on the runway is dramatic: Jamie drives a pickup truck, dropping the hollow tacks, while Adam chases in a car. The results are immediate and conclusive. Within 15 seconds of impact, all four of Adam's tires are trashed, bringing the car to a grinding halt. The hollow design proves superior, cutting rubber plugs and deflating tires in seconds, a significant improvement over the minutes it took with the solid spikes. The fans were unequivocally right; the hollow design is a far more effective tool for stopping chase cars.

Keep reading in The Digest

The full 4-minute article, 3 more sections, and every new episode from MythBusters and the creators you follow.

  1. The Grenade Grip Challenge
  2. Video Games: A Path to Real-World Skills?
  3. The Speed and Accuracy of Reloading
Read the full digest — free

More from MythBusters

Can Gummy Bears Actually Be Used As Rocket Fuel? | Mythbusters

Mythbusters tackles a fan-favorite myth: can gummy bears actually be used as rocket fuel? The team experiments with various gummy bear preparations to see if the sugary treats can propel a rocket.

October 15, 2026

MythBusters Tests Two Of The Most Explosive Myths In Their Final Season | Mythbusters

In their final season, the Mythbusters tackle two explosive myths: whether a cement truck can contain a dynamite blast in a mail truck, and if a hovercraft can safely traverse a minefield.

October 12, 2026

Can You Cook Shrimp By Firing Them Through a "Special" Gun? | Mythbusters

Mythbusters tackles two viral food fables: cooking shrimp by firing them through an air cannon and juicing fruit with explosives. They meticulously recreate the setups to determine if these bizarre culinary claims hold any truth.

October 11, 2026

Is The U-2 Spy Plane The Hardest Aircraft In The World To Land? | MythBusters

Mythbusters Adam Savage and Jamie Hyneman investigate the U-2 spy plane's legendary difficulty to land and the potential lethality of commercial drones.

October 10, 2026

MythBusters Test a Law That Half The Country Disagrees With | MythBusters

MythBusters Adam Savage and Jamie Hyneman tackle two common driving myths: whether hands-free phone use is as distracting as handheld, and if Hollywood-style reverse driving is possible in real life.

October 8, 2026

Could Walter White's Trunk Machine Gun Actually Work? | MythBusters

MythBusters tackles two explosive challenges: the literal meaning of "blowing it out of the water" with a ship and a depth charge, and the feasibility of Walter White's trunk-mounted machine gun from the Breaking Bad finale.

October 7, 2026

All MythBusters summaries →