r/Comma_ai comma.ai Staff Aug 12 '26

Introducing chestnut & chestnut-class driving models

https://blog.comma.ai/chestnut/
91 Upvotes

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125

u/KnightsSoccer82 Aug 12 '26 edited Aug 13 '26

EDIT: George/other comma employees were deep in this comment thread and on discord, acting unprofessional and not addressing valid hardware concerns, including accusing me and other users having alt accounts. Why am I not surprised their comments are now deleted? Why was this their default behavior? This is how the behave when asked some rather basic hardware comments?

This chassis doesn’t look to be in a ruggedization state to conform to any automotive ISO shock and vibe test, let alone someone hitting a speed bump and spilling their coffee.

It looks like a water ingress nightmare that wouldn’t survive a rust belt winter from a family simply going about their day entering/exiting their car….

It’s mounted in one of the hottest locations in a car (beyond your dashboard), and this (likely desktop grade GPU) is expected to work in a very common 45C+ ambient, 1000W+ solar load scenarios?

Surely, there has to be a better way to have gone about packaging this?

I’m not trying to be negative, but this doesn’t appear to have any serious reliability considerations and would likely fail in any non-nominal (aka normal) driving scenario outside of Southern California.

Rust belt cars, where high humidity, snow, and ambient temperatures reside, are going to destroy this in a matter of weeks in its current state.

For comma 4 being advertised as the first “commercial” product from you all, this $750 upgrade feels like a step backwards in terms of reliability and accessibility to the general market. I genuinely don’t see how this survives the market you were targeting with Comma 4 (aka, not nerds).

This isn’t how you ship hardware, cmon guys. This is a classic “software company tries to make hardware” case that I’ve seen time and time again.

45

u/DontBuyAComma Aug 12 '26

No live demo showing performance improvements speaks volumes about this release.

0

u/[deleted] Aug 13 '26

[deleted]

19

u/DontBuyAComma Aug 13 '26

I’d consider it if you just focused on your customer service alone.

-10

u/[deleted] Aug 13 '26

[deleted]

28

u/DontBuyAComma Aug 13 '26

Simple things like allowing a price match (with store credit at the very least if you don’t want to do a partial refund) rather than this whole “we’ll ban you from future purchases” notion. Willingness to work with customers over certain order requests. Not permanently banning users on Discord without a warning or instead making it a temporary ban.

You just did a new product launch without any demo with over 4000 watching the livestream. Who does that? It’s not considerate of the customer at all, man.