researchers at harvard has created the octo bot. despite having no circuit boards, it's smart enough to move its limbs in sequence. their next version should be able to swim. >>> if you've been cheated, when you need help, she's on your side. better call behnken. >> investigator shannon behnken is still trying to help a largo woman who's seen two cars plow through her fence over the past 6 months. the county wants more proof that she needs a guard rail. >> reporter: amber davis is afraid to be in her own backyard. >> we don't spend any time out here at all. we can't. >> reporter: who wouldn't be. she's in constant fear. >> i hear it all the time. just in normal driving, just people thinking that it's not as sharp as it is until they actually make it up there. >> reporter: late last month, a car thief fleeing police whipped around this curve and slammed through the fence. this is the second car to take out davis' fence in 6 months. >> had this fence not been there, they would have probably continued right through the house. >> report