We drove down to Bristol today. We've now got a policy of not using the SatNav on journeys like this.
Experience has shown that all it does is make you unhappy by warning you of traffic disruptions that you can't do anything about. I'd much rather sail along in blissful ignorance of the enormous tailback waiting just around the corner. And the alternative route is quite often a lot less pleasant than sitting in a stationary car for a while.