Stop in for a cup of coffee

Dammit.
I just realized that I need to buy a new gas tank. I don't know why I thought the one I had was going to be fine, but the whole inside is black and rusty. I just put a little gas in it to check for leaks after a friend and I welded up the little pinhole that was in it. Not only did it not pass the test, but the gas came out of it BLACK.