Time traveling cab and the commish

I needed to take a taxi ride from somewhere in the high 70s on Park heading to Madison to a university library. I hailed the cab but when I went to get in, it was a Delorean and it took me a second to figure that out; the cabbie started to drive away but I yelled at him to stop and he rushed me in asking if I was planning on getting in the cab this century. There was an odd pause (it was a time machine, see?) and wasn't sure where the library was but told the cabbie that I would know it when we got close. He begins driving down Park Ave. and then he morphs from a normal cabbie in the city to Ed Harris in looks, but he told me his name was Roger Goodell. As we're driving down Park, the road turns into more of a campus road, weaving between buildings, and I am texting E.M., a former coworker from S.A. to find out exactly where the library is. He texts back one word: "Horsemen." I know I've told the cabbie the wrong location so I redirect him to the undergraduate library, which has statues of men riding horseback in front, and as he turns the cab around to park while facing the direction that he will need to go after I'm out of his cab, he starts explaining that he's just a regular guy even though he's Roger Goodell. I have pulled out my wallet and I told him I have an $11 bill, but when I pull it out from my wallet, I correct myself and tell him it's actually a $15 bill that I got as a novelty, but it's real money. I pay him in cash - but not w/my coveted $15 bill - and I hope out of the cab and run over to the library entrance.