Last night, I destroyed the golden tank!!
It came hauling butt over to our team like a loon, and a teamate got one shot on him and then the tank passed in front of my barrel at the wrong time :P
Needless to say- I got 500 gold. What'd I do with it? Converted nearly all of my experience to free experience :P Finished the tree for my Tier III American Medium tank (T2M2?), and made a pretty big dent in my Hetzer's tank tree.
It made my WoT night in any case.