Our brilliant Sat Nag invention is completely useless except to highlight just how infuriating a Sat Nav really can be... Packed with over 25 'useful' comments delivered in a recognisable patronising female voice including such classics as 'In 100 meters I'm going to talk to you in that special voice, which should let you know that you've upset me in some way that is bound to be your fault' and 'In 50 meters I'm going to put on my most annoying voice and say 'Is your short cut really faster when we get stuck in traffic like this, well, is it darling?