You need $100 Billion to solve self-driving? Wrong. A small team of engineers in San Diego is doing it with a…

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Summary

George Hotz's comma_ai is revolutionizing self-driving cars with a $999 device using smartphone chips and end-to-end learning, proving you don't need $100 billion and massive test fleets. The company has 20,000+ active users, runs profitably, and represents an open-source alternative to proprietary solutions from Tesla, Waymo, and Cruise.

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#1
You need $100 Billion to solve self-driving? Wrong. A small team of engineers in San Diego is doing it with a smartphone chip and a few cameras: ... for $999.🧵
#2
The self-driving industry is a graveyard of capital: • Cruise burned $9B. • Zoox raised $990M. • Waymo absorbed $10B+. • And don't get me started with Tesla... They all followed the same playbook: Expensive hardware. Pre-mapped cities. Massive test fleets.
#3
Ever heard of @realGeorgeHotz? The hacker who jailbroke the first iPhone at 17. The guy who cracked the PS3. In 2015, Elon Musk offered him a contract to build Tesla's autopilot... Hotz walked away. He bet he could build something better, faster, and cheaper himself...
#4
He bought an Acura and a GoPro. In one month, he built a self-driving car in his garage. When the government (NHTSA) sent him a threat demanding safety specs... he didn't hire lawyers. He cancelled the product and open-sourced the code: github.com/commaai/openpi…
#5
That was the pivot that changed everything. @comma_ai isn't a car company. It's an Android company. While Tesla tries to be Apple (proprietary, closed, locked hardware)... Comma built OpenPilot: a software that runs on your car.
#6
Here is the "Magic": The comma device. A $999 device that mounts on your windshield. It hijacks your car's existing radar and steering systems. Suddenly, your 2017 Toyota or 2020 Hyundai drives itself. (It works on 325+ models).
#7
Unlike classic robotics with hand coded rules, Comma uses end to end learning. The AI watches video and outputs steering commands. It drives like a human and learns from 20k+ users every day. The results speak for themselves. Comma raised only $18.1M and runs profitably, earning about $400 per device while others burn billions.
#8
The stats are wild. • 20,000+ active users • 300M+ miles driven • Used for 56% of all drive time People aren’t testing it. They rely on it to commute. That level of usage comes from one thing: better learning systems. Under CTO @___Harald___ , the team shifted to World Models, described in the 2025 paper "Learning to Drive from a World Model." Full interview with Harald here: youtu.be/XPbZE3DBXQE?si…
#9
The "Stakes" are massive. This is a battle for the soul of AI. Option A: AI is owned by 3 mega-corps who rent it to you for $15k. Option B: AI is open-source, runs on consumer hardware, and you own it. @comma_ai is the only one fighting for Option B.
#10
Hotz has stepped back from CEO, but the velocity hasn't stopped. They just launched the comma 4. It’s 5x smaller, runs on a Snapdragon 845, and installs in 5 minutes. It is the "Raspberry Pi" moment for autonomous driving.