> How can you be confident the system is at least as reliable with the concerns you are less focused on?

That's my current heartache with my Comma: it does a stunningly shitty job about decelerating into brake lights ahead, choosing rather to keep accelerating (or I guess keeping speed) and then slamming on the brakes as it gets a few feet from the car. OT1H, it's never actually put me in danger, OTOH I don't want "next time" to be the bad luck

Not only does that make me super nervous, it's also a rear-ending risk (since the poor Comma can't see what's behind me)

I haven't worked up the nerve to build and flash one of the 18 quadrillion forks onto my Comma; I've heard some of them are better, but that some word is doing a lot of work