Public transportation in Michigan is a foreign concept. Had to say it.
It's not a foreign concept in Maryland or Washington, DC. The light rail in Maryland runs between the BWI Airport and downtown Baltimore. Washington, DC has an excellent public transportation system.
As someone who has traveled around the US, and has used the transit systems in SF, Portland, Seattle, Chicago, Philly, NYC, and DC, I was comparing the almost complete lack of transportation options other than a car in Metro Detroit to those areas. The mind set in Michigan is that transportation is a car and highways.
I have also used public transportation in Toronto, London, Paris, Brussels, Amsterdam, Frankfurt, Berlin, Munich, Prague, and Rome, but all those are foreign!