When I was nine years old, I took the Stevenson Expressway out of Chicago. I didn’t know I’d been on that expressway until very recently. It was definitely I-55, because we went through St. Louis after leaving Illinois. I’m now an Adlai Stevenson dork, so I was so elated to find out that I’d been on his namesake expressway. (This was before Obama became President, so the DuPage portion was not yet the Obama Expressway.) Edit: The DuPage portion is the Will Rogers. Meh.