I like cats just fine, but do you really think this guy deserves to be run over 11 times? For crying out loud, it was a cat. Whether it was run over once or 11 times, dead is dead. Chances are that he did shorten the length of the suffering the cat had to endure.
If that was his real intention, he would have used something he could aim with. Just whacking the cat on the head with a heavy object would have ended the suffering instantly. Stomping the head with a foot would also work, if no heavy object was available? By the time he'd run over the cat several times, and it was still thrashing, he had to have known that plan wasn't working.