The agricultural inspectors at the borders never cease to surprise visitors from out-of-state. It can be quite amusing.
One other stop in Napa was unrelated to wine. Geysers figured into our Yellowstone stop, and we saw a place marked as Old Faithful of California in Napa, so we stopped. Perhaps it would have been better to see the CA offering before the WY landmark. I'm not saying that the CA geyser was bad; it's just hard for anything to compare to the immense quantity of water spraying up at Yellowstone. The CA geyser also had a carnival sideshow feeling, with a pen including four-horned sheep and fainting goats.
I've lived here my entire life and I've never heard of such a place, if that means anything.