The Sat Nag is the most satirical take on this imaginable and combines the two perfectly. At less than £10 (£7.99 from IWOOT) it’s clearly not got a valuable function, but it does contain a raft load of funny quotes including such gems as “In 100 metres turn left. No right, err, no left. Sorry, I never can tell my left from my right” and “I know you’re a man, but it’s been 35 minutes now, so can you please admit you’re lost and ask someone the way”.
The map also displays those essential local roads, such as backseat drive and earache avenue. Using the Sat Nag there’s a very real chance you’ll still get lost but at least you’ll laugh about it when you do.