The world needs a new source of energy, an unspillable source.

which is safer with a hydrogen fuel cell a direct fuel system or air intake?

I plan to add a hydrogen fuel cell in my smart car and i want to know if it would be safer to run a secondary fuel line using a fuel tee and running a hose from the hydrogen fuel cell output straight to the tee input. Or run a small hollow needle right into the air intake from the hydroxy fuel cell.