I was asking around for ideas about getting that black shit off my hatch area and floorboard...well here's something awesome I found... Dry Ice Blasting Just a thought. I'm trying this out next week. Its not cheap and it may not work, but we'll find out. If it doesn't blast off, I'll have 500lbs of dry ice pellets to use and scrape/chip the shit off. The machine is 1k for a day, 2k for a week and 3k for a month. Ice is like $85 for 500lbs. Only thing you need is an Air compressor that can support 100psi. This is going to be fun I hope. If not, you'll hear me bitchin'.