If you do find yourself in a situation where you are forced to ride in a billionaire's submarine, just make sure it's the billionaire who is fanatically obsesse

If you do find yourself in a situation where you are forced to ride in a billionaire's submarine, just make sure it's the billionaire who is fanatically obsessed with deep sea exploration... https://en.wikipedia.org/wiki/Deepsea_Challenger https://en.wikipedia.org/wiki/Deepsea_Challenger