I haven't really got that far in, but it writes in a sort of clipped, geeky note form in the reasoning traces without too obvious claudeisms, it seems to have been trained to have a level of wit, almost.

Like, in the car wash test, this was in the thinking traces:

“Walking won't get the car washed.”

and:

“Perhaps answer: Walk if you want to wash yourself? No”

Which made me laugh out loud.

Even in the final answer:

- - -

You have to drive it. Walking 50m won't get the car clean, it'll just get you to the car wash.

If you mean you going to the car wash to check prices / pay / get a brush, then yeah, just walk the 50m. It's about 30 seconds on foot and you save the cold-start emissions of firing up the engine for a distance you could roll.

If you mean the car itself getting washed, the car needs to be at the car wash. You can push it 50m for a workout, but driving it 50m is the practical way.

- - -

The emphasis on "you" was from the model. I mean I write like this so I can't judge its tone harshly :-)

ETA: The knowledge cutoff is January this year, so it didn't encounter car wash discourse in the scraped training set, though I suppose you can't rule out some kind of fine tuning to deal with this scenario. Still made me chuckle.

ETA 2: obviously I wrote this before you added your last paragraph. WTF dude.