For those that have not been to the Le Mans 24hr (bikes or cars) or the GP this a great route to Le Mans, although it does take a fair bit longer. From Rouen it follows the old route down (pre Motorway/Autoroute A28/E402 Rouen - Le mans). So if the weathers good this is much better than the Autoroute. Although I am a biker at heart the Le Mans 24hr car race is fantastic fun and you will find thousands of Brit bikers go... highly recommended.