they spot the out of control vehicle barreling down highway 190. his life and the lives of others may hang in the balance. >> how was were you going, sir? >> about 60 miles an hour, i tried to hit the emergency brake, regular brake. >> the first to respond to the call is rocky carole, a patrolman from sam houston university. >> i immediately grabbed a set of keys. i left out with the sirens. >> a fellow officer follows carole. his dash cam trained on the chase. >> i'm in a green ford expedition. i don't want to kill anybody. >> i tried to turn the ignition. the keys wouldn't work. i thought on the dashboard, it wouldn't work either. i tried all i thought i could do to get the car stopped. >> as the patrolman set out to find him, he is facing a life or death decision. how to keep from hitting somebody and killing them and