It's true, when it comes to SUVs "they just don't make 'em like they used to." But after watching this 1978 International Harvester Scout II kill its crash-dummy passengers over and over again in slow motion, I'm not sure that's necessarily a bad thing.
CrashNet1 which uploaded this any many other crash-test videos reports that the frontal crash evaluation of this Scout was performed at 30 MPH. That's enough speed to deal damage to a modern car too, but the way the dummy's necks snap over the sans-headrest seats and into the windshield looks awful discouraging.
This clip is pretty complete, if quiet... over the course of eighteen minutes you get to see the Scout forced into the barrier from just about every perspective and in slow-motion.
What are the biggest differences you see between this and the performance of a modern SUV?
The bodies in this 2014 Jeep Cherokee get knocked around quite a bit in a 35 MPH frontal-crash, but the occupants head's are bounced somewhat safely between an air bag and a forgiving head support behind them. Plus nobody gets a steering wheel in their spleen.
I love old trucks more than most, especially International Scouts, but there's no doubt we gain a lot of value in safety with modern tech, even if we lose the purity of simplicity in our vehicles.