> people driving into lakes because their GPS told them to

That one has actually happened: http://bgr.com/2016/05/17/car-gps-mapping-directions-lake/

It's a little unfair, though. There was heavy rain, fog, and a second article [0] says it was also in the middle of the night. The photo there also does make it look easy to mistake as a road.

[0]: http://torontosun.com/2016/05/13/woman-follows-gps-ends-up-i...