The "Bee-yatch" is what I call my car’s voice nav system.  She dutifully tells me which road to take, where to turn, etc. 

Of course, every time I turn her on, she strictly informs me that "safe driving is the driver’s responsibility".  In other words, she (and Ford) doesn’t want to be blamed (and sued) if she drives me off a cliff. 

I always thought the warning was a dumb feature, but then again, there are dumb drivers who probably need to be reminded that a nav system is not, you know, God.  Exhibit A:

Driver obeys navigation system, no matter what

BERLIN (Reuters) – An 80-year-old German motorist obediently following his navigation system ignored a motorway "closed for construction" sign and crashed his Mercedes into a pile of sand further down the road, police said Monday.

"The driver was following the orders from his navigation system and even though there was a sufficient number of warnings and barricades, he continued his journey into the construction site," a police spokeswoman told Reuters.

"His trip finally ended when he wound up crashing into a pile of sand," she added.

The driver and his wife escaped uninjured from the collision, which occurred on a motorway near Hamburg.