@nyrath I guess if you have a fantastic material like BPC already; an abundance of "clean nukes"; no inhibitions, it would be tempting to just go for it. But you'd need a way to take off and detonate a bit away from the bottom in order to not splay out the tracks with a radial blast... bore nukes detonating underground, perhaps? Then hefty track suspension can partially work like on the Orion.
I'm imagining a scene where an Ogre, supposedly blocked by mountains, comes boom-boom-booming over.
nyrath