I agree. The "money" probably has the shape and appearance of money, but isn't legal tender out of concern risk management and theft. The cube is almost certai

I agree. The "money" probably has the shape and appearance of money, but isn't legal tender out of concern risk management and theft. The cube is almost certainly hollow, to cut weight and cost. It's the idea of what a cube of $1m would look like. It should at least fulfill that requirement faithfully.