[srdjanr]

I guess that it generally has 50/50 chance of drive/walk, but some prompts nudge it toward one or the other.

Btw explanations don't matter that much. Since it writes the answer first, the only thing that matters is what it will decide for the first token. If first token is "walk" (or "wa" or however it's split), it has no choice but to make up an explanation to defend the answer.