Im not sure why you think the ability to do a quarter mile dash at 75 mph doesnt matter when it comes to catching and killing their target. I more meant the car thing to show just how absurdly fast they can run. Even their nonsprint speed would leave usain bolt mauled on the ground in seconds. And its not just straight line speed, these guys are VERY agile at high speeds meaning good luck dodging even if you get the chance to try. And all of this is unenhanced. If being a vampire in the form transfers any bonuses, that would be absurdly lethal.