The best of us geeks can be a little wary about GPS. Though common sense dictates that you shouldn't drive your car directly into a solid object, no matter how nice the voice telling you to do it is, some people are so trusting of tech that stuff happens.
You know what never directed anyone into a bridge? The original Global Positioning System: the handwritten note. The GPS notepad is a gag for anyone who remembers simpler times of drawing a map for your friends and hoping they can follow your instructions. It's also a lot cheaper!