On Sunday I am driving up from London to central Scotland. A trip I do about 6 times a year. This time just for the hell of it. I am using the iPad 2 as a satnav. I have the 'NavFree' app. And have already ascertained that the iPad will successfully pair with my iPhone on Bluetooth. So no sim card will be necessary. My only misgivings are the weight of the iPad in the windscreen fitting cradle. Will it last the 436 mile journey? NavFree is a free app. But if the trip is successful, I will purchase the speed camera and 'ad free' upgrades. If it fails, then I will just have to go back to using the Garmin.