of sorts... i know that if i backed my truck into that block wall, it'll collapse or shift, while loosening many of the joints... back my truck into a properly rebarred poured (solid) concrete wall wouldn't do too much, maybe a hairline crack or two, but if i were to construct one, it'd be at least 20" thick wall, not 8" like that block... if that is your bunker pictured above, i'd add an additional block wall around it, in such a way as the blocks would overlap the joints of the inside layer... anywho, i've no need for a bunker, so i won't be constructing one...