A lot depends to on how the SUV handles in a crash. I remember as a kid (I'm 28) there were reports on the mid 90s Explorer and Blazer and how in certain wrecks the engine would push back and through the floor of the driver's compartment.

From my experience, the big SUV drivers especially (Suburban, Escalade, etc.) drive like they are indestructable. Traveling up and down I-55 that connects Chicago and St. Louis on a regular basis it is scary to see a Suburban loaded down with luggage, kids, etc. go flying by at 90 mph. Nothing is going to protect that family if a wreck would occur at that speed and weight much less whatever they hit.