The amount of voltage needed to lift a car with an electromagnet depends on several factors. The size of the coil, as well as the amperage will need to be factored in to know how much voltage will be used.
Approximately 15 cubic feet of Helium.
How much lift do i need to clear 44's on a 1985 Toyota Pickup, Stick shift?
it depends is he/she inhaling it or are balloons tide to the person