It's a digression, the topic is brought up in nearly every HN thread where somebody mentions the word "car," the ensuing discussions generally have the character of a religious debate, and that comment brings nothing new to the discussion. Being correct isn't enough to make a comment worthwhile.

ETA: For what it's worth, I think the downvotes on this comment are fair too. It doesn't need to be reiterated that tired, off-topic comments are tired and off-topic every time somebody makes one. I answered because I feel bad when I see somebody confused, but this is another example of a comment that probably deserves to be downvoted even though it's correct.