Well, now that you added that beginning part, I guess I have to make my suggestion detailed:
The AP Mine should become the AT Mine, because there is a Bouncing Betty Mine already, which IS an AT mine. Also, I'm pretty sure there's some code you could implement into it that makes it only detect vehicles that are a small distance near it. I personally think having a mine you step on and a mine you can get next to and have it pop up it sort of redundant. So, I think that the AP Mine should kill vehicles instead.
Just a suggestion...