It's all the other things...BAD/DISTRACTED drivers...cellphones....pets...kids....3 martini lunch....road rage....road stupidity...it could as well been a truck....a mini-van (remember them!)...old drivers...young drivers.....slow drivers.....fast drivers!
I'm sorry but bitchin about SUVs alone is like blaming the President about our state of affairs when Congress passes all the laws and treaties.