As revealed in The Good Place Podcast by Mike Schur, the ad on top of the Jacksonville Airport cab (which is crushed by the monster truck) is for The Mindy St Claire Rescue Alliance.
Eleanor says that "There's a very specific Lenny Kravitz concert I want to be front row at." There was a specific Lenny Kravitz concert in Stockholm where his pants split and exposed his penis to the audience.
A sign in Donkey Doug's room reads "970" inside of an outline of Florida. This is a road sign for SR 970, a freeway in Miami known as the "Downtown Distributor."
Tahani is always mentioning famous people she knows. Here she mentions Sting and Elon Musk.