This sounds like exactly what I wanted. There have been a number of times I've been in the car and wanting to ask Siri something it couldn't handle has been a lot e.g. "What state am I in, and how far am I to the border to the state I'm going to cross next, and can I pump my own gas on each state I'm driving through?" Though a bit of that is premised on whether it could extract information from google maps.
I thought Oregon was the only state with “pump gas for you”laws?