Send us Fan Mail In this special holiday edition of Sidecar Sync, Amith Nagarajan and Mallory Mejias unwrap two stories that feel wildly different—but point to the same big idea: technology breaks barriers we once assumed were permanent. First, they dive into the NFL’s quiet fascination with supersonic flight and how faster-than-sound travel could reshape sports, conferences, and global strategy. Then they shift gears to AI, unpacking a massive new study analyzing 100 trillion tokens of real-...