I think the rare occurance is not a collision with > 25 tons of force, but an upwards force on the underside of the car by an object capable of piercing 1/4 inch plate steel (and not ricocheting, as I suspect most debris would).
A jack, although maybe rated to 5 tons, is unable to pierce the bottom of my car at 25 tones of force because my car only weighs 1.5 tons. I'd have to run over something at speed that angles upwards after I drive over it, or drop my car onto something sharp (at 35km/h) to achieve a similar force.
A jack, although maybe rated to 5 tons, is unable to pierce the bottom of my car at 25 tones of force because my car only weighs 1.5 tons. I'd have to run over something at speed that angles upwards after I drive over it, or drop my car onto something sharp (at 35km/h) to achieve a similar force.