[farmdve]

I like the concept of the Comma device. If only to get just one feature from it, adaptive cruise control.

But it requires for me to not only reverse engineer, but potentially also modify the firmware of my ABS unit to allow it to brake, which I am not comfortable doing.

[brenschluss]

This isn't true; no reverse engineering or firmware modification is necessary.

[mdaniel]

There's some hair splitting here: one may have to reverse engineer the mappings of the can bus for your car if you want to port the Comma to your platform, but I do believe the second clause is correct: it's a MITM system and does not monkey with the onboard ECM at all. Unplug device, give to dealer for service or updates, plug device back in

[robotracer]

True in my experience. Back in 2019 i got a model year 2020 honda civic hatchback that was not yet supported. So as not to break the car, I purchased an oem steering motor for the car, dumped the firmware and then found the necessary data to support the car. I've been using comma since then. Other comments are correct about it being an assistant. You are the captain, now thinking more strategically about the road and vehicles ahead. The comma handles the tactical of keeping between the lines. The brain relief from all the mostly automatic constant correction is huge on long road trips. It's got a good driver attention model as well. Keep your eyes on the road. I will say a pair of glasses frames is sufficient to fool it though.