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Mark Rober just set up one of the most interesting self-driving tests of 2025, and he did it by imitating Looney Tunes. The former NASA engineer and current YouTube mad scientist recreated the classic gag where Wile E. Coyote paints a tunnel onto a wall to fool the Road Runner.

Only this time, the test subject wasn’t a cartoon bird… it was a self-driving Tesla Model Y.

The result? A full-speed, 40 MPH impact straight into the wall. Watch the video and tell us what you think!

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[-] Ghyste@sh.itjust.works 265 points 1 day ago

I seem to recall that fElon prevented the self driving team from utilizing LIDAR for any part of the system, instead demanding that everything run off of optical input. Does anyone else remember the same?

[-] 9point6@lemmy.world 162 points 1 day ago

Was just thinking this

A single LiDAR sensor prevents this kind of issue

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[-] SapphironZA@sh.itjust.works 22 points 20 hours ago

Yes, I recall at the time experts saying it was a terrible mistake and Elon saying Machine learning will bridge the gap.

The real reason was to increase margins.

[-] NikkiDimes@lemmy.world 55 points 23 hours ago* (last edited 23 hours ago)

What's cool is that Teslas used to have radar sensors, at least, but Elon removed them from production to save money. Even if you have a car from back then, the software no longer uses them and they'll just physically unplug them the next time you have the car serviced, as it's just a drain on the battery at this point 🙃

[-] Quill7513@slrpnk.net 28 points 22 hours ago

meanwhile our subaru has lidar for adaptive cruise control and emergency braking

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[-] Arbiter@lemmy.world 59 points 1 day ago

Iirc they were using a combination of lidar and radar, but Elmo wanted to cut costs.

[-] ripcord@lemmy.world 12 points 19 hours ago

Cameras and radar, I believe. Never lidar.

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[-] Viri4thus@feddit.org 92 points 22 hours ago* (last edited 22 hours ago)

Who was the idiot that removed LiDar to cut costs?

/s

[-] bobslaede@feddit.dk 43 points 22 hours ago

Elon removed the radar. Tesla cars never had lidar. What an idiot Musk.

[-] nialv7@lemmy.world 8 points 17 hours ago* (last edited 17 hours ago)

Tesla had camera+radar+sonar, and that wasn't their own tech - they used mobileye EyeQ back then. When they switched to in house tech they gradually ditched the radar and sonar which made no sense to me. But at the time I saw their lead say in an interview that this is superior and I believed. not anymore.

they said doing so cut costs but obviously lidar/radar/sonar only gets cheaper over time, let alone the extra r&d costs because a vision only system is much more difficult to develop.

[-] Sylvartas@lemmy.dbzer0.com 15 points 19 hours ago

He did say lidar was "useless" though.

[-] echodot@feddit.uk 15 points 18 hours ago* (last edited 17 hours ago)

He's said humans don't use LiDAR so his cars shouldn't have to. Of course humans have a brain, and he's cars don't, but you can't tell him anything.

[-] Zink@programming.dev 9 points 18 hours ago

Human drivers also make automobiles one of the most dangerous ways to travel.

[-] Bazoogle@lemmy.world 8 points 17 hours ago

I think it's also reasonable to say a human dying because of their own actions is different than a human dying because a big corp cut costs on safety features in an entirely autonomous car where the human has no ability to stop what's happening. (You can control them in current teslas, but they're working on cars without human controls as well)

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[-] spankmonkey@lemmy.world 13 points 19 hours ago

He also said the government doesn't use sql.

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[-] Valmond@lemmy.world 11 points 18 hours ago

They are so expensive too! /s

Who would have known electronics gets cheaper all the time?? /j

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[-] Buffalox@lemmy.world 107 points 23 hours ago* (last edited 23 hours ago)

This is a very good test, and the car should have past. That said though, I hate the click bait format where they show a stupidly obvious cartoonish wall, when the real wall is way more convincing.

The Video:

That sort of clickbait is 100% sure to get a "do not recommend channel" from me, I'm so sick of it. And it's sad when the video has such a good point.

The Clickbait

I can see it's kind of funny, but it's misleading.

[-] Glitterbomb@lemmy.world 35 points 19 hours ago

You realize Mark Robers target audience is like 8 years old, right? He also references looney tunes and wile e coyote a couple dozen times, including in this thumbnail you're losing your mind over. The thumbnail fits the theme very well if you ask me.

This video isn't a rigorous scientific test. This is a children's video designed to get them interested in the scientific method. Get over yourself.

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[-] MurrayL@lemmy.world 88 points 23 hours ago

YouTubers - especially large channels like this - constantly A/B test with different thumbnails and stick with whatever one drives the most traffic (no pun intended) to the video.

You might not like it, but it’s unfortunately the reality of operating a content creation business on an algorithm-driven platform.

There are plenty of channels I follow that make fantastic videos, but sometimes you have to tolerate the shitty thumbnails because that’s just the reality of the system they’re operating within.

[-] Tanoh@lemmy.world 15 points 20 hours ago

Yeah, that is just how youtube works. You as an individual can say you don't like annoying thumbnails and titles, but they 100% work. And channels that don't use them are just not getting as many viewers.

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[-] Maestro@fedia.io 44 points 22 hours ago

Have you heard of DeArrow? https://dearrow.ajay.app/

It's a browser extension that replaces clickbait thumbnails with good community sourced ones

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[-] SloppyPuppy@lemmy.world 8 points 17 hours ago

Well if your thumbnail is not good enough and catchy people will not watch it. Which wont make the channel profitable. Which will cause it to not exist.

I hope you know that usually youtubers will not even start making the video if they don’t have a killer thumbnail to it. Thats the platform.

[-] SinningStromgald@lemmy.world 14 points 20 hours ago

Still astounded people use anything other than the subscription section on YouTube.

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[-] RobotZap10000@feddit.nl 139 points 1 day ago
[-] The_Caretaker@lemm.ee 26 points 20 hours ago

Was there a coyote or a roadrunner anywhere nearby?

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[-] jewbacca117@lemmy.world 98 points 1 day ago

I read something a while back from a guy while wearing a T-shirt with a stop sign on it, a couple robotaxies stopped in front of him. It got me thinking you could cause some chaos walking around with a speed limit 65 shirt.

[-] audaxdreik@pawb.social 46 points 23 hours ago

I think one of my favorite examples was using simple salt to trap them within the confines of white lines that they didn't think they could cross over. I really appreciate the imagery of using salt circles to entrap the robotic demons ...

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[-] Corkyskog@sh.itjust.works 29 points 21 hours ago
[-] TommySoda@lemmy.world 73 points 1 day ago

And that's what you get for cheaping out on tech and going with cameras over lidar. Not only that, but Tesla removed all the radar technology that literally every car uses for collision detection about a year ago.

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[-] Teal@lemm.ee 11 points 18 hours ago

Beep beep! Damn things are using ACME LiDAR!

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[-] Rentlar@lemmy.ca 13 points 19 hours ago

Mark Rober's video of the six tests (the remaining section is about mapping Space Mountain as Mark wanted to do since he was a kid)

The wall looking like a road test

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this post was submitted on 16 Mar 2025
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