by the end of the day's news cycle, here's the official naative. nearly collided with her green buick. >> reporter: as the buick becomes a makeshift memorial, tammy looks to be just another victim in a string of road range incidents. most recently,y, in auin, texas, two men going at it with a baseball bat and a wooden pole. but a mom, cut down in her own driveway. but despite all the attention, no arrests. the next day, february 14th, a heartbreaking valentine's day. vegapolice release the security video of the sedan cruising the neighborhood, and they say it's crystal's de description of one of the men. >> as far as we can tell, there was no prior contact, they're complete strangers. >> there's a manhunt, everyone is like, could this happen to me? >> reporter: that night, an agonizing moment for bob myers. at 7:05 p.m., he disconnects his beloved wife from the respirator. >> s'll never leave my heart, but she's gone. ii didt want my baby to suffer. but i didn't want her to go either. >> reporter: but you had to do it. >> had to. >> reporter: but b