i don t know why they wouldn t question driving into a puddle that doesn t seem to end. reporter: and in 2008 a washington state bus driver followed his gps directions right into a nine-foot bridge. continue straight ahead. reporter: his bus used to be 12 feet tall. a year later in the uk one man nearly drove off a cliff following that directional voice a little too closely. but perhaps the biggest gps blunder of all, what used to be this georgia man s childhood home. wrecking crews accidentally leveled the wrong address thanks to satellite coordinates. so maybe it s a good idea to listen to that voice in your head. turn left ahead. reporter: and not just the one coming from your dashboard. dan kloeffler, abc news, new york. hello. common sense, anyone? northeast you know, i have a funny story about this. i was driving north, and gps, whatever her name is, she told me to take a right, another right, another right, and another right. and i wound up on the same road.