Hope it’s just in your floor mat, and that you didn't somehow grind it in. Gum in carpet generally only comes out with a pair of scissors.
10. Broken glass
Broken glass really sucks for two reasons: First, it probably wasn’t your fault that the window was smashed in, and second, you will never, ever get all those tiny shards out of the seat, carpeting, and even inside the door itself. Sorry.