Meng-Jiun Chiou

Applied Scientist @Amazon | PhD in Computer Science from @NUSingapore 🇸🇬 | Long-term $TSLA investor | Taiwanese 🇹🇼 | Opinions are my own

[Meng-Jiun Chiou @coldmanck]

@xie_yaqi @yusufma555 Both of you are brilliant 😎

[Meng-Jiun Chiou @coldmanck]

@elonmusk @farzyness What happened to your claimed 50% compound growth vehicle sale 🥲

[Meng-Jiun Chiou @coldmanck]

@SawyerMerritt @elonmusk To me what Ashok actually means is EU standards are also followed by countries other than EU countries. For example, Taiwan followed EU’s ECE R79 to restrict EAP functionalities in 2025. So this is a good news many more countries.

[Meng-Jiun Chiou @coldmanck]

@yunta_tsai Greatness is born in such environment 😂

[Meng-Jiun Chiou @coldmanck]

@yunta_tsai @elonmusk @JessePeltan 建中vs北京四中?

[Meng-Jiun Chiou @coldmanck]

@0_majaya Is doing a daily closing ceremony at 7pm a great thing to look up to? 😂 Holy Japanese working culture.

[Meng-Jiun Chiou @coldmanck]

@SawyerMerritt @grok Estimate the latest 2025 take rate using the number of eligible cars (HW3/4) in FSD-eligible countries as of end-2025

[Meng-Jiun Chiou @coldmanck]

@Tesla Another one ☝️

[Meng-Jiun Chiou @coldmanck]

@Tesla I can prove that! 🙌

[Meng-Jiun Chiou @coldmanck]

@EthanHe_42 Google Fi has this “Block known spam” function that maybe worths a try

[Meng-Jiun Chiou @coldmanck]

@Teslarati @elonmusk Now is really a good time for Mary Barra to reveal that. 🤣

[Meng-Jiun Chiou @coldmanck]

Kinda surprised that Andrej is only trying FSD V13 for the first time almost two years after its rollout. A few weeks ago he said on a podcast that “self-driving is not even near done”. But judging from this post… maybe he’s just been busy focusing on his own projects lately 😆

[Andrej Karpathy @karpathy]

I took delivery of a beautiful new shiny HW4 Tesla Model X today, so I immediately took it out for an FSD test drive, a bit like I used to do almost daily for 5 years. Basically... I'm amazed - it drives really, really well, smooth, confident, noticeably better than what I'm used to on HW3 (my previous car) and eons ahead of the version I remember driving up highway 280 on my first day at Tesla ~9 years ago, where I had to intervene every time the road mildly curved or sloped. (note this is v13, my car hasn't been offered the latest v14 yet)

On the highway, I felt like a passenger in some super high tech Maglev train pod - the car is locked in the center of the lane while I'm looking out from Model X's higher vantage point and its panoramic front window, listening to the (incredible) sound system, or chatting with Grok. On city streets, the car casually handled a number of tricky scenarios that I remember losing sleep over just a few years ago. It negotiated incoming cars in tight lanes, it gracefully went around construction and temporarily in-lane stationary cars, it correctly timed tricky left turns with incoming traffic from both sides, it gracefully gave way to the car that went out of order in the 4-way stop sign, it found a way to squeeze into a bumper to bumper traffic to make its turn, it overtook the bus that was loading passengers but still stopped for the stop sign that was blocked by the bus, and at the end of the route it circled around a parking lot, found a spot and... parked. Basically a flawless drive.

For context, I'm used to going out for a brief test drive around the neighborhood to return with 20 clips of things that could be improved. It's new for me to do just that and exactly like I used to, but come back with nothing. Perfect drive, no notes. I expect there's still more work for the team in the long march of 9s, but it's just so cool to see that we're beyond finding issues on any individual ~1 hour drive around the neighborhood, you actually have to go to the fleet and mine them. Back then, I processed the incredible promise of vehicle autonomy at scale (in the fully scaleable, vision only, end-to-end Tesla way) only intellectually, but now it is possible to feel it intuitively too if you just go out for a drive. Wait, of course surround video stream at 60Hz processed by a fully dedicated "driving brain" neural net will work, and it will be so much better and safer than a human driver. Did anyone else think otherwise?

I also watched @aelluswamy 's new ICCV25 talk last week (https://t.co/RdaM23kvez) that hints at some of the recent under the hood technical components driving this progress. Sensor streams (videos, maps, kinematics, audio, ...) over long contexts (e.g. ~30 seconds) go into a big neural net, steering/acceleration comes out, optionally with visualization auxiliary data. This is the dream of the complete Software 1.0 -> Software 2.0 re-write that scales fully with data streaming from millions of cars in the fleet and the compute capacity of your chip, not some engineer's clever new DoubleParkedCarHandler C++ abstraction with undefined test-time characteristics of memory and runtime. There's a lot more hints in the video on where things are going with the emerging "robotics+AI at scale stack". World reconstructors, world simulators "dreaming" dynamics, RL, all of these components general, foundational, neural net based, how the car is really just one kind of robot... are people getting this yet?

Huge congrats to the team - you're building magic objects of the future, you rock! And I love my car <3.

[Meng-Jiun Chiou @coldmanck]

@SawyerMerritt Curious about pros and cons of approved proposal 12. Might or might not be a good thing for shareholders? Looks like an annual election of board members.

[Meng-Jiun Chiou @coldmanck]

@elonmusk Let’s do this in Bay Area!

[Meng-Jiun Chiou @coldmanck]

@wholemars Not sure if it's the same, but I do feel slight "brake stabbing" with v13.2.9 New MY 2025, especially when passing through a traffic green light with left-turn red light on. It's just subtle speed-down (say from 40 to 36) but can still feel it.

[Meng-Jiun Chiou @coldmanck]

@elonmusk Hi

[Meng-Jiun Chiou @coldmanck]

@TeslaCharging I love the concept and the atmosphere, but the burger and fried chicken are too salty.

[Meng-Jiun Chiou @coldmanck]

Just casted my vote to the $TSLA annual meeting proposals! @Tesla

[Meng-Jiun Chiou @coldmanck]

Public access to Tesla Robotaxi now activated in Bay Area! Will be testing it myself soon.

$TSLA @Tesla @robotaxi