I think some GPS manufacturer is missing a marketing tool by not having the voice assume an annoyed tone when you go past the recommended turn.  “Whatsa matter, you don’t believe me?” Or a sultry woman who implies love and adventure when advising you of the next turn.

A sultry voice, a lonely man

A darkened road, late night

A woman’s voice, as only can

And everything’s all right

Turn here, she says, there’s more to come

That’s right, one quarter mile

I only make this call for some

I love your winsome smile

Oh no, you’re past, the turn was there

You’re gonna make me cry

I thought I’d found a man who’d care

Though just a voice am I