Step on mine?

[Rensa]

Is there anyway to achieve this matter? Maybe making the soldier somehow bond with some part of the car.. I searched for a while, but its nowhere!

[ZOOMER]

Upon entering the vehicle the soldier is bonding to the car...
Just remove the exit code and the soldier will not be able to exit.

[Apache Thunder]

Err....what's the question here? feels like something is missing. If your referring to having landmines that detonate from soldier proximity then I made a tutorial on how a while back:

CSM - How to make working APMines with credited kills...

This can't be done on projectiles however, know that the mine will have to be a PCO to detonate from soldier proximity. Further details on how to do it are in that thread.