Cabbie driver

Ryan Reynolds gets in a black cab, puts the destination in the drivers phone and they go there guided by sat nav, driver gets lost because sat nav destination is changed remotely by the villain and then he comes out with the pitiful line that sat nav doesn't lie.

I know this was a plot device to get us to realise what the hackers are capable of and for them to get Reynolds away from his back up, but do the writers not understand black cab drivers don't use sat nav? They spend years learning every London street and fastest routes between places before they can even get their licence, and then this mug gets completely lost.

If they wanted to do this they should have had him use an Uber cab or any other private hire, they don't have to do the Knowledge like Black Cabs.