Removing Artillery Fungus

I do not have mulch anywhere in the yard but as I have found out it also grows in rotting wood and I live in a woods.  My '99 Suburban is covered with the Fungus - what say you the herd on best way to remove it? It has been on there a LONG time.

FWIW my cheap pressure washer doesn't touch it.

I have been looking @ Tube of You and have seen a few ways to remove it.  But i still have questions. 

Has anyone tried Goo Gone Automotive?  My plan - always have a plan - is to use a plastic razor with the Goo Gone Auto.  Does Goo Gone leave a residue - streaks, etc - anything that I need to aware?

Thanks

I gotta ask .... what is artillery fungus?

In reply to TurboFource :

I had to look it up. I've seen it (the black spots) but I did not know anything else about it. Cool fungus!

I think manual effort is the only way. Any solvents that would take it off would damage the surface.

I was expecting weathered bronze cannons or other actual artillery. I haz disappoint...

Just wait until it gets all over your siding. 

Hootus in danger?

I am concerned about the Goo Gone even though it says Automotive on it.

Thanks for the responses.

I got the plastic razor blades.