that was unexpected 

Not really that unexpected.
Most of these tall 4WD vehicles that people seem to love are quite top heavy compared to a normal car. They are also very unstable at high speed again due to the high centre of gravity combined with soft suspension and squishy low pressure tyres.
Great for off-road but a menace on the highway.

the amount of deformation of the cabin is quite shocking.

i thought these things were supposed to be built like tanks ?