Things that Comma handles seamlessly that the built-in cruise in both cars will not:
- Full stop and go
- Sharp turns on the highway that require slowing down (both built-in adaptive cruise modes will gladly just drive you off a cliff at 65 mph)
- Situations where the lane lines are hard to see or are implied
- Non-highway driving
- Not requiring me to touch the steering wheel every 20 seconds
Maybe those things work in higher end cars (though I'd say the Ioniq is a fairly high-end car), but then again with Comma you get it for ~$2k in a ton of cars instead of having to buy a luxury car.
It is true that if you are on a highway, with clear lane lines, the steering assist in both cars is certainly a lot better than nothing, but it's just not nearly matching the reliability and versatility of Comma in any sort of imperfect situation.
In many countries doing this will void your insurance.
> - Sharp turns on the highway that require slowing down (both built-in adaptive cruise modes will gladly just drive you off a cliff at 65 mph)
While it's probably given that this will happen, it's also an infrastructural failure. Just place a limited speed limit sign way before the sharp turn, or fix the road so it doesn't make a sharp turn.
I'm Comma user in one of my cars as well, and I do like it. But, when was last time you tried built-in driving assist in a Tesla-priced car?
Tesla's driver assist is nothing special nowadays.