The very talented Qcom of Celestia Radio teamed up with the awesome voice actress Rina-chan to create this custom Flutershy voice for you GPS. Now you can get directions from Fluttershy...if you don't mind. Here's a video example of it in action.
Here are some examples of Pinkie pie and Fluttershy in action for the TomTom device
Pinkie Pie (TomTom)
and check out Rina-chan's website