Are there any rules for masterwork vehicles? Do they count as tools? I was thinking of getting one of my characters a “sweet ride”.
I dunno, if someone's willing to pay for it to be a masterwork tool I'd probably give them a +2 to Profession: Driver checks (or handle animal to drive or diplomacy to drive or whatever you're using to make the vehicle go).
You could explain this by saying it's been built to be easier to pull, or has more comfortable reins etc so the animals are less resistant to pulling it