If you've ever wished your car could drive itself on the highway, comma.ai is making that a reality — and it's already in over 20,000 cars on the road today.
Founded in 2015 by George Hotz (the hacker famous for jailbreaking the iPhone and hacking the PlayStation 3), comma.ai builds aftermarket self-driving kits that plug into your existing car. No new car purchase required. No $15,000 Tesla Full Self-Driving subscription. Just a device that mounts to your windshield and a harness that plugs into your car's existing camera connector.
What Does Comma Do?
Comma makes the comma four — a small device that mounts behind your rearview mirror and turns your car into a semi-autonomous vehicle. It's powered by openpilot, an open-source self-driving software with over 50,000 stars on GitHub.
Here's what it does:
- Lane centering — keeps your car perfectly centered in the lane on the highway
- Adaptive cruise control — maintains speed and distance to the car ahead, including stop-and-go traffic
- Lane change assist — signal and the car changes lanes for you
- Always-on dashcam — three cameras record everything, with optional cloud backup
- 360° vision — three wide-angle cameras provide a full view around your car
- Over-the-air updates — the software gets better over time, automatically
How Does It Compare to Tesla Autopilot?
Consumer Reports rated comma's system the #1 active driving assistance system — ahead of Tesla, GM Super Cruise, and Ford BlueCruise. The key advantages:
- Works with your existing car — 325+ supported models from 27 brands
- No subscription required — all features work with a one-time purchase
- Open source — the software is transparent and community-driven
- 300+ million miles driven — proven on real roads by a massive community
What Is the Comma Four?
The comma four is the latest hardware from comma.ai, priced at $999. It includes:
- Three high-resolution cameras (road-facing, driver-facing, wide-angle)
- A powerful onboard computer running openpilot
- WiFi connectivity for OTA updates
- Built-in storage for dashcam footage
You also need a car-specific harness ($99) that connects the device to your car's existing LKAS camera connector. There are about 40 different harness types covering all supported vehicles.
Which Cars Does It Support?
The comma four supports 325+ vehicle models from 27 brands, including:
- Toyota — RAV4, Camry, Corolla, Highlander, Prius, and more
- Honda — Civic, Accord, CR-V, Pilot, Odyssey, and more
- Hyundai — Sonata, Tucson, Santa Fe, Ioniq 5, Palisade, and more
- Kia — K5, Sportage, Telluride, EV6, Sorento, and more
- Ford — F-150, Explorer, Mustang Mach-E, Escape, and more
- Tesla — Model 3 and Model Y
- Subaru, Lexus, Genesis, Volkswagen, Chevrolet, Mazda, Nissan, and more
Browse all supported vehicles →
How Does Installation Work?
Comma designed the system to be DIY-installable in about 15 minutes. But if you want it done right by a professional — that's what we do.
At Self Driving DFW, we handle everything:
- We order the comma four and the correct harness for your specific car
- We drive to your location anywhere in the Dallas/Fort Worth metro
- We install the device in about 30 minutes
- We set up the software and take you on a first drive
All for $1,999 — device, harness, installation, setup, and demo included.
Is It Safe?
Comma's system is a Level 2 driver assistance system, similar to Tesla Autopilot or GM Super Cruise. It requires you to keep your hands on the wheel and stay attentive. The driver-facing camera monitors your attention and will alert you if you look away from the road.
With over 300 million miles driven and 20,000+ active users, openpilot has an extensive safety track record. And because it's open source, the code is publicly auditable.
Ready to Try It?
If you're in the Dallas/Fort Worth area and want self-driving capabilities in your car, get started here. Check your car's compatibility, and we'll handle the rest.