Originally Posted by formula M
Even if he did "hit" something, do u understand what the shear stength of that bolt is..?
The same force applied to break the bolt, must also be at the contact point. Does it look like the underside of his vehicle sustained thousands of pounds of force/dmg?
While I have not actually done any calculations, I am strongly inclined to agree with this assessment. Indeed, I think most people don't really realize what the strength of a ~3/8 in. stainless steel bolt is, even if it is "just" the shear strength.
Of course, this implies a (probably irrefutable) line of argument for the OP in favor of his position, but he will probably need to do some rudimentary calculations to back it up . . .