Mio's endearingly-geeky Knight Rider GPS - which guides you with the authentic voice of K.I.T.T. from the original TV series - goes on sale today exclusively at Radio Shack in the US. The deal will see Radio Shack as the sole place to get the device until the end of October. Aside from the retro styling and voice-synchronized flashing lights, the Knight Rider GPS allows users to pick from more than 300 common names (i.e. not just Michael) and have K.I.T.T. welcome them personally whenever the unit is switched on.