http://youtube.com/watch?v=dgJSXrkwshg

Great! Thank you Pascal.
But a main part the advices in this video are available where Street View's picture are in high resolution.

Blog entry:
http://google-latlong.blogspot.com/2008/04/getting-from-to-b-with-street-view.html

Competition had this feature 101 years ago though! :)

http://blogoscoped.com/files/photo-auto-maps.jpg

http://blogoscoped.com/archive/2007-08-16-n10.html

Excellent pick Philipp (-:
Is there already a patent for that?

Now I want a play button! Just imagine typing in start and finish points and get a video showing you where to go :-)