We have two friends from Germany that have been travelling over 2 years on motorcycles. They have been all through Africa, then up through Arabia to India. I think they are next going on to NZ and AUST. I think sponsors are helping with costs, and a documentary will be made.
Here is their web-site (in German):
http://motorradnomaden.reiseblogger.de/
Click "Karte" to see where they have been.