Dang. I haven't always been able replicate these, but every model I've tried provides increasing dumb answers to this.
(These are semi-ethically sourced from small non-web non-data-center models, stolen, in turn, from the original thieves who created them from stolen data.)
So, I'd recommend taking the walk. It's a great opportunity to stretch your legs and clear your mind before or after washing your car!
Sure, why not both? Take a leisurely stroll to the carwash, and once you reach it, jump into the driver's seat for some washing fun! It'll be like a little adventure where you get to combine two activities into one. 😉
Both walking and driving would be great options, depending on your personal preferences and circumstances.
Sonnet gets it wrong, though.