Jack Fischer, a Colorado native currently living on the International Space Station, just captured video of a truly unbeatable trip: San Diego to Denver at five miles per second.
This video, which plays at accelerated speed, begins with a view of California, passes over the barren West, and ends with the familiar blobs of metro Denver just before the ISS reaches sunlight.
I would say this might convince some flat-earthers, but Earth actually looks a little too good. (That's because it was filmed from freaking space.)