My standard reply to all these articles extolling the virtues of getting to a hospital fast for stroke

The first 24 hours may be critical but you didn't mention that maybe 10% of those eligible for tPA actually get it. And of those getting it it only works to completely reverse the stroke 12% of the time. http://wrkf.org/post/more-stroke-patients-now-get-clot-busting-drug

All they ever do is parrot the messages from the stroke associations. And those messages are lying by omission.