Pop quiz, hot shot: There’s a bomb on a bullet train. If the Shinkansen drops below 100 kilometers per hour, it blows up. What do you do? What do you do!?
Well, one thing you don’t do is confuse “The Bullet Train Explosion” for a “Speed” remake set in a country with a functional public transportation system. For one thing, this sleek Netflix spectacle is actually a remake of the 1975 Ken Takakura/Sonny Chiba vehicle that inspired “Speed,” even though “The Bullet…