Prelude: While Tycoon is declared, before taking any other actions, you may discard all of your Material and Fuel to declare exactly 1 undeclared ambition. Do not place the zero marker. (You may do this just after declaring Tycoon.)
A: You can use its ability even if you have zero Material and Fuel.
A: Nothing happens to the Material and Fuel on those cards. You can still use Tycoon's Ambition.
A: They are not discarded. You can still use Tycoon's Ambition.