Beware "Old Priest Grad Road" - west entry to Yosemite

I have a cousin who is a world traveller and he told me one night in Switzerland the navigation had him drive across a narrow foot bridge to a mountain hostel. In the morning when he walked outside he felt sick looking at what they drove across and realising they had to drive back across it.

Also in Japan while navagating to a fish market it wanted him to drive down a boat ramp and cross a bay. He said he people had done it.