I often find myself talking to the satnav. If it tells me to turn right I say “OK then” etc. If I go the wrong way it doesn’t bat an eyelid. It just calmly tells me how to get back on the right track.
This doesn’t seem like human nature to me. Lots of people are more likely to say “Oh for goodness sake you’ve gone the wrong way. You’re going to have to go back to that junction” raising their eyebrows contemptuously.
You could have this reaction with varying degrees of contempt, or contempt that grows with each wrong turn – “bloody hell you’ve gone and done it again, you absolute moron”.
You should also be able to have conversations with your satnav. The technology is nearly there. It would be someone to chat to when on a long journey. “How far is it ‘til the next junction? Do you think we have time for a pitstop at the next services” etc etc
Remember I’m the ideas man – now sort it.