A new version of Google Earth is out. If you like and use this free software, the new version is much the same but a bit slicker. I particularly like the directions tour. It's like being a raptor soaring over the planned route! Particularly impressive on clover leaf junctions!
It would be even more useful if the tour could be recorded and saved as a movie. After all, there is no wi-fi available along cross-country routes. Not yet, anyway. I realize that this is really a poor man's version of Sat-Nav (except the images are real air photos) which is becoming a common place accessory in many vehicles, but I rather like the idea of being able to plan ahead and with a good co-pilot manning the movie we could almost be rally drivers!