So there was a DeLorean at the Oscars?

For reasons that are still unclear, Seth Rogen and Michael J. Fox arrived on the Oscars stage in a DeLorean before presenting the Academy Award for Best Film Editing to Hacksaw Ridge. Rogen was even wearing Nike Air Mags. He then broke into singing a song from Hamilton. I’m very confused.
All this was probably to celebrate Back to the Future, which Rogen talked up in a filmed segment before he arrived on stage. It was quite possibly the coolest random moment in an evening full of random mo