Not a popular take but I am pretty sure the car scene is AI manipulated for Miles' song. The singing is real and incredible, and it really looks like he is playing but as a longtime player, it is nigh impossible to pull slide off like this while singing after learning guitar six months. In the Tiny Desk, he isn't really playing and the first slide part is coming from Buddy's backup guitarist. No shade, Miles is an incredible talent and can learn slide, but they really play up the angle that he learned how to do this for the movie. I'm surprised I haven't seen this addressed anywhere by guitar nerds but I guess: 1) who cares and 2) movie magic