서울에서 부산까지 KTX vs 비행기 레이스! 누가 더 빠를까?

There are cases where people traveling from Seoul to Busan are wondering whether to take KTX or plane, but I made a video of those concerns through the race.
After the race, you can also think about how to choose KTX vs. plane more efficiently, so please watch it a lot.