I did learn metric in school, did you not? I'm in Ohio, not sure if it's different elsewhere. Typically it was tied to physics and chemistry, but still learned it.
I use both metric and imperial for work. But the issue is changing every single street sign, updating all of our school material, etc would cost the country billions of dollars and it just isn't worth it at this point.
I've heard public transit is pretty good in DC, too. My fiancée and I are planning a trip to DC at the end of August. I plan on parking my car at the hotel and just use public transit, so we'll test that theory.
EDIT: Also, I've never been to Salt Lake City. Seems like a really cool place though!
I did learn metric in school, did you not? I'm in Ohio, not sure if it's different elsewhere. Typically it was tied to physics and chemistry, but still learned it.