I agree with that. Solid rims on a vehicle ARE considered "bomb-proof" anchors here in the states. We have drilled with this type of anchor point before. (I have pictures of this on my profile) And we have also used this in a live rescue and our vic was anchored to our Heavy Rescue. Both were successful. I have more faith, to be honest, in the force of gravity on a Heavy Rescue truck weighing several tons versus a vertical pole in the ground or a metal structural member that could have unseen flaws. I am with Lutan on this one.