> How many ping pong balls do you need to lift a Ferrari from the bottom of a lake? I estimate about 55,000? Ferarri is 1300kg, needs 1300 liters, 1.3m^3 of a

> How many ping pong balls do you need to lift a Ferrari from the bottom of a lake? I estimate about 55,000? Ferarri is 1300kg, needs 1300 liters, 1.3m^3 of air to be buoyant, and assuming square pingpong ball of 3cm, that be ballpark 46k. Add some extra for current, drag, mud