In the ending of Get Out, after Rod shows up in a police car to save the day, Chris asks Rod the following:
Rod: I told you not to go in that house.
Chris: I mean... How did you find me?
Rod: I'm TS motherfucking A. We handle shit. That's what we do. Consider this situation ... fucking handled.
It's a hilarious answer which makes for one of the movie's best moments, but it still doesn't answer the question.
How did Rod find Chris at the end of Get Out?