this is already done, but with drones and not what amounts to rc cars, not mines but RPG warheads, and not glue but zipties

advantage is that drone is much faster and harder to notice, and RPG warhead is some 3x lighter and just as versatile in this application

edit: and another problem is that microwave communications require line of sight between robot/drone and operator, you'll see that frequently fpv drones lose signal right before hitting target. this is due to trees or something getting in the way