. >> we built this incredible new service called trailhead, you can see it at trailhead.com.nd you're interested in a new job, you want to build new skills, you want to have one of the top paying jobs in the country, you go to trailhead, you get trained on sales force, we build a one-on-one relationship with you, we make sure you have those skills, we certify you, badge you and introduce you to employers. >> i know that the president, gary cohn i know for a long time. he's deeply concerned that technology could hurt jobs, i want to know how common place the stories are. >> the technology is getting lower cost and easier to use, that's true with our company, we're rolling this product into so many companies, hundreds of thousands of companies all over the world, how do we bring in all the jobs behind it. if there are sales force administrators, and sales for developer, there's going to be the systems and systems integrators, but what you want is all these great entrepreneurs, and all those factory worker, and he retrained himself using the technology. and i just heard about th

that's the trailhead? >> yes. >> reporter: it's in the middle of nothing. >> yes. >> reporter: all right, let's go. it says 63 miles. and you only had 90 max on your tank. >> uh-huh. >> we return with amber to this fateful spot. the place where, directed by her smartphone, amber turned off highway 64 and onto this dirt road. >> google said to go on a road that i didn't see. and i went against my better instinct. i trusted google maps, which i shouldn't have. >> reporter: let's face it. we're all too dependent on our devices to get us places. and amber's not the first to discover that can nearly get you killed. just ask donna cooper. back in 2010, she, too, trusted her gps and followed it blindly during a trip through death valley. nearly finding out for herself how one of the hottest places on earth got its name. >> it just kept saying, you know, go this distance and make a turn, make a u-turn. there's nothing there. we were out of gas. we were out of road. we were out of everything. >> reporter: "20/20's"