I made this thread for a laugh... might as well add the punchline.
After I drove the car, I needed to tighten the capped nut up some more. Since I have limited tools.... I was using a cresent wrench. Yeah I know... I'm lame.
Long story short, I was rushing right before I needed to head out for a club event 2 hours away. I somehow bound the cresent wrench in there and it slipped off. I twisted my experimental cap off. Little sucker took a heck of a lot of force before it came off.... but alas, I needed a quick fix and ended up going with the $2 plug from Lowe's.
But darnit, my toy vending machine piece is still holding in there!